# Table of Contents - [Welcome to LMMS | User manual](#welcome-to-lmms-user-manual) - [FAQ | User manual](#faq-user-manual) - [Installation | User manual](#installation-user-manual) - [Settings | User manual](#settings-user-manual) - [Reporting a Bug | User manual](#reporting-a-bug-user-manual) - [Interface Overview | User manual](#interface-overview-user-manual) - [Troubleshooting | User manual](#troubleshooting-user-manual) - [Sidebar | User manual](#sidebar-user-manual) - [Instruments: Samples & Presets | User manual](#instruments-samples-presets-user-manual) - [Toolbar | User manual](#toolbar-user-manual) - [Project Notes | User manual](#project-notes-user-manual) - [FX Mixer | User manual](#fx-mixer-user-manual) - [Safety | User manual](#safety-user-manual) - [Beat+Bassline Editor | User manual](#beat-bassline-editor-user-manual) - [Jumping Right In | User manual](#jumping-right-in-user-manual) - [Controller Rack | User manual](#controller-rack-user-manual) - [Automation | User manual](#automation-user-manual) - [Main Menu Bar | User manual](#main-menu-bar-user-manual) - [Creating a Track | User manual](#creating-a-track-user-manual) - [Piano Roll | User manual](#piano-roll-user-manual) - [Instrument Window | User manual](#instrument-window-user-manual) - [Song Editor | User manual](#song-editor-user-manual) - [3.1 General Controls | 日本語 | User manual](#3-1-general-controls-user-manual) - [GIG Player | User manual](#gig-player-user-manual) - [3.2 Preferences | 日本語 | User manual](#3-2-preferences-user-manual) - [3.3 Song Editor | 日本語 | User manual](#3-3-song-editor-user-manual) - [3.6 Automation | 日本語 | User manual](#3-6-automation-user-manual) - [Kicker | User manual](#kicker-user-manual) - [Using VSTs | User manual](#using-vsts-user-manual) - [Exporting a Song | User manual](#exporting-a-song-user-manual) - [AudioFileProcessor | User manual](#audiofileprocessor-user-manual) - [3.5 Piano Roll | 日本語 | User manual](#3-5-piano-roll-user-manual) - [4.2 Instrument Presets | 日本語 | User manual](#4-2-instrument-presets-user-manual) - [3.4 Beat & Bassline Editor | 日本語 | User manual](#3-4-beat-bassline-editor-user-manual) - [3.7 Mixer | 日本語 | User manual](#3-7-mixer-user-manual) - [4.1 Saving & Loading | 日本語 | User manual](#4-1-saving-loading-user-manual) - [FreeBoy | User manual](#freeboy-user-manual) - [2.3 困ったときは… | 日本語 | User manual](#2-3-user-manual) - [5.3 FreeBoy | 日本語 | User manual](#5-3-freeboy-user-manual) - [3.9 Sidebar | 日本語 | User manual](#3-9-sidebar-user-manual) - [5.2 BitInvader | 日本語 | User manual](#5-2-bitinvader-user-manual) - [4.3 Effect Presets | 日本語 | User manual](#4-3-effect-presets-user-manual) - [1. LMMSにようこそ | 日本語 | User manual](#1-lmms-user-manual) - [5.1 AudioFileProcessor | 日本語 | User manual](#5-1-audiofileprocessor-user-manual) - [3.8 Project Notes | 日本語 | User manual](#3-8-project-notes-user-manual) - [5.7 Mallets | 日本語 | User manual](#5-7-mallets-user-manual) - [5.6 LB302 | 日本語 | User manual](#5-6-lb302-user-manual) - [BitInvader | User manual](#bitinvader-user-manual) - [5.4 GIG Player | 日本語 | User manual](#5-4-gig-player-user-manual) - [5.14 sfxr | 日本語 | User manual](#5-14-sfxr-user-manual) - [5.9 NEScaline | 日本語 | User manual](#5-9-nescaline-user-manual) - [5.17 Vibed | 日本語 | User manual](#5-17-vibed-user-manual) - [5.11 Organic | 日本語 | User manual](#5-11-organic-user-manual) - [5.12 PatMan | 日本語 | User manual](#5-12-patman-user-manual) - [5.5 Kicker | 日本語 | User manual](#5-5-kicker-user-manual) - [5.10 OpulenZ | 日本語 | User manual](#5-10-opulenz-user-manual) - [5.8 Monstro | 日本語 | User manual](#5-8-monstro-user-manual) - [5.15 SID | 日本語 | User manual](#5-15-sid-user-manual) - [5.16 Triple Oscillator | 日本語 | User manual](#5-16-triple-oscillator-user-manual) - [2.1 インストール | 日本語 | User manual](#2-1-user-manual) - [6.5 Delay | 日本語 | User manual](#6-5-delay-user-manual) - [5.13 SF2 Player | 日本語 | User manual](#5-13-sf2-player-user-manual) - [6.4 Crossover Equalizer | 日本語 | User manual](#6-4-crossover-equalizer-user-manual) - [5.19 ZynAddSubFX | 日本語 | User manual](#5-19-zynaddsubfx-user-manual) - [6.3 Bitcrush | 日本語 | User manual](#6-3-bitcrush-user-manual) - [5.18 Watsyn | 日本語 | User manual](#5-18-watsyn-user-manual) - [6.6 Dual Filter | 日本語 | User manual](#6-6-dual-filter-user-manual) - [6.8 Equalizer | 日本語 | User manual](#6-8-equalizer-user-manual) - [6.1 Amplifier | 日本語 | User manual](#6-1-amplifier-user-manual) - [Using MIDI | User manual](#using-midi-user-manual) - [NEScaline | User manual](#nescaline-user-manual) - [6.9 Flanger | 日本語 | User manual](#6-9-flanger-user-manual) - [6.2 Bass Booster | 日本語 | User manual](#6-2-bass-booster-user-manual) - [LB302 | User manual](#lb302-user-manual) - [6.7 Dynamics Processor | 日本語 | User manual](#6-7-dynamics-processor-user-manual) - [6.16 Waveshaper | 日本語 | User manual](#6-16-waveshaper-user-manual) - [6.10 Multitap Echo | 日本語 | User manual](#6-10-multitap-echo-user-manual) - [PatMan | User manual](#patman-user-manual) - [6.14 Stereo Matrix | 日本語 | User manual](#6-14-stereo-matrix-user-manual) - [6.11 Peak Controller | 日本語 | User manual](#6-11-peak-controller-user-manual) - [7.1 Overview | 日本語 | User manual](#7-1-overview-user-manual) - [Mallets | User manual](#mallets-user-manual) - [6.12 ReverbSC | 日本語 | User manual](#6-12-reverbsc-user-manual) - [6.13 Spectrum Analyzer | 日本語 | User manual](#6-13-spectrum-analyzer-user-manual) - [Watsyn | User manual](#watsyn-user-manual) - [SF2 Player | User manual](#sf2-player-user-manual) - [SID | User manual](#sid-user-manual) - [6.15 Stereo Enhancer | 日本語 | User manual](#6-15-stereo-enhancer-user-manual) - [7.2 Using VST Instruments | 日本語 | User manual](#7-2-using-vst-instruments-user-manual) - [6.17 LADSPA Plugin Collection | 日本語 | User manual](#6-17-ladspa-plugin-collection-user-manual) - [7.3 Using VST Effects | 日本語 | User manual](#7-3-using-vst-effects-user-manual) - [OpulenZ | User manual](#opulenz-user-manual) - [Vibed | User manual](#vibed-user-manual) - [2.2 セットアップ | 日本語 | User manual](#2-2-user-manual) - [Monstro | User manual](#monstro-user-manual) - [Effects Prologue | User manual](#effects-prologue-user-manual) - [Your First Song with LMMS | User manual](#your-first-song-with-lmms-user-manual) - [Amplifier | User manual](#amplifier-user-manual) - [ZynAddSubFX | User manual](#zynaddsubfx-user-manual) - [BassBooster | User manual](#bassbooster-user-manual) - [VeSTige | User manual](#vestige-user-manual) - [Bitcrush | User manual](#bitcrush-user-manual) - [Organic | User manual](#organic-user-manual) - [sfxr | User manual](#sfxr-user-manual) - [Triple Oscillator | User manual](#triple-oscillator-user-manual) - [常见问题 | 简体中文 (1.3.x) | User manual](#-1-3-x-user-manual) - [目录配置 | 简体中文 (1.3.x) | User manual](#-1-3-x-user-manual) - [安装 LMMS | 简体中文 (1.3.x) | User manual](#-lmms-1-3-x-user-manual) - [报告 Bug | 简体中文 (1.3.x) | User manual](#-bug-1-3-x-user-manual) - [欢迎使用LMMS | 简体中文 (1.3.x) | User manual](#-lmms-1-3-x-user-manual) - [安全性 | 简体中文 (1.3.x) | User manual](#-1-3-x-user-manual) - [创建一个轨道 | 简体中文 (1.3.x) | User manual](#-1-3-x-user-manual) - [工程注释（Project Notes） | 简体中文 (1.3.x) | User manual](#-project-notes-1-3-x-user-manual) - [乐器：采样和预设 | 简体中文 (1.3.x) | User manual](#-1-3-x-user-manual) - [使用 MIDI | 简体中文 (1.3.x) | User manual](#-midi-1-3-x-user-manual) - [实战 | 简体中文 (1.3.x) | User manual](#-1-3-x-user-manual) - [故障排除 | 简体中文 (1.3.x) | User manual](#-1-3-x-user-manual) - [GIG Player | 简体中文 (1.3.x) | User manual](#gig-player-1-3-x-user-manual) - [控制器机架（Controller Rack） | 简体中文 (1.3.x) | User manual](#-controller-rack-1-3-x-user-manual) - [主菜单栏 | 简体中文 (1.3.x) | User manual](#-1-3-x-user-manual) - [使用 VST | 简体中文 (1.3.x) | User manual](#-vst-1-3-x-user-manual) - [FreeBoy | 简体中文 (1.3.x) | User manual](#freeboy-1-3-x-user-manual) - [AudioFileProcessor | 简体中文 (1.3.x) | User manual](#audiofileprocessor-1-3-x-user-manual) - [界面简述 | 简体中文 (1.3.x) | User manual](#-1-3-x-user-manual) - [BitInvader | 简体中文 (1.3.x) | User manual](#bitinvader-1-3-x-user-manual) - [LB302 | 简体中文 (1.3.x) | User manual](#lb302-1-3-x-user-manual) - [工具栏 | 简体中文 (1.3.x) | User manual](#-1-3-x-user-manual) - [侧边栏 | 简体中文 (1.3.x) | User manual](#-1-3-x-user-manual) - [导出你的歌曲 | 简体中文 (1.3.x) | User manual](#-1-3-x-user-manual) - [样式编辑器（Pattern Editor） | 简体中文 (1.3.x) | User manual](#-pattern-editor-1-3-x-user-manual) - [Mallets | 简体中文 (1.3.x) | User manual](#mallets-1-3-x-user-manual) - [Kicker | 简体中文 (1.3.x) | User manual](#kicker-1-3-x-user-manual) - [效果混合器（Mixer） | 简体中文 (1.3.x) | User manual](#-mixer-1-3-x-user-manual) - [Monstro | 简体中文 (1.3.x) | User manual](#monstro-1-3-x-user-manual) - [PatMan | 简体中文 (1.3.x) | User manual](#patman-1-3-x-user-manual) - [自动化控制（Automation Editor） | 简体中文 (1.3.x) | User manual](#-automation-editor-1-3-x-user-manual) - [NEScaline | 简体中文 (1.3.x) | User manual](#nescaline-1-3-x-user-manual) - [配置 LMMS | 简体中文 (1.3.x) | User manual](#-lmms-1-3-x-user-manual) - [OpulenZ | 简体中文 (1.3.x) | User manual](#opulenz-1-3-x-user-manual) - [Organic | 简体中文 (1.3.x) | User manual](#organic-1-3-x-user-manual) - [乐器窗口 | 简体中文 (1.3.x) | User manual](#-1-3-x-user-manual) - [SID | 简体中文 (1.3.x) | User manual](#sid-1-3-x-user-manual) - [Watsyn | 简体中文 (1.3.x) | User manual](#watsyn-1-3-x-user-manual) - [放大器（Amplifier） | 简体中文 (1.3.x) | User manual](#-amplifier-1-3-x-user-manual) - [效果器选择窗 | 简体中文 (1.3.x) | User manual](#-1-3-x-user-manual) - [SF2 Player | 简体中文 (1.3.x) | User manual](#sf2-player-1-3-x-user-manual) - [压缩器（ Compressor） | 简体中文 (1.3.x) | User manual](#-compressor-1-3-x-user-manual) - [VeSTige | 简体中文 (1.3.x) | User manual](#vestige-1-3-x-user-manual) - [双滤波器（Dual Filter） | 简体中文 (1.3.x) | User manual](#-dual-filter-1-3-x-user-manual) - [Vibed | 简体中文 (1.3.x) | User manual](#vibed-1-3-x-user-manual) - [ZynAddSubFX | 简体中文 (1.3.x) | User manual](#zynaddsubfx-1-3-x-user-manual) - [压缩失真（Bitcrush） | 简体中文 (1.3.x) | User manual](#-bitcrush-1-3-x-user-manual) - [低音增强器（ BassBooster） | 简体中文 (1.3.x) | User manual](#-bassbooster-1-3-x-user-manual) - [峰值控制器（Peak Controller） | 简体中文 (1.3.x) | User manual](#-peak-controller-1-3-x-user-manual) - [延迟（Delay） | 简体中文 (1.3.x) | User manual](#-delay-1-3-x-user-manual) - [分频均衡器（Crossover Equalizer） | 简体中文 (1.3.x) | User manual](#-crossover-equalizer-1-3-x-user-manual) - [sfxr | 简体中文 (1.3.x) | User manual](#sfxr-1-3-x-user-manual) - [多点延迟（Multitap Echo） | 简体中文 (1.3.x) | User manual](#-multitap-echo-1-3-x-user-manual) - [立体声混响（ReverbSC） | 简体中文 (1.3.x) | User manual](#-reverbsc-1-3-x-user-manual) - [均衡器（Equalizer） | 简体中文 (1.3.x) | User manual](#-equalizer-1-3-x-user-manual) - [钢琴卷帘窗（Piano-Roll） | 简体中文 (1.3.x) | User manual](#-piano-roll-1-3-x-user-manual) - [你的第一首歌曲！ | 简体中文 (1.3.x) | User manual](#-1-3-x-user-manual) - [多段压缩器（LOMM） | 简体中文 (1.3.x) | User manual](#-lomm-1-3-x-user-manual) - [动态处理器（Dynamics Processor） | 简体中文 (1.3.x) | User manual](#-dynamics-processor-1-3-x-user-manual) - [LADSPA 插件 | 简体中文 (1.3.x) | User manual](#ladspa-1-3-x-user-manual) - [波形整形器（Waveshaper） | 简体中文 (1.3.x) | User manual](#-waveshaper-1-3-x-user-manual) --- # Welcome to LMMS | User manual For the complete documentation index, see [llms.txt](https://docs.lmms.io/user-manual/llms.txt) . This page is also available as [Markdown](https://docs.lmms.io/user-manual/master.md) . [](https://docs.lmms.io/user-manual#changelog) [What's New in LMMS?](https://github.com/LMMS/lmms/releases) ----------------------------------------------------------------------------------------------------------------- **Note for macOS users:** if you're using macOS 10.14(Mojave) or newer, please use the according version. The macOS 10.13 build is buggy on 10.14 or newer. **New changes in 1.2.2:** (2020-06-25) * General improvements * Stop filtering out valid characters from file name while exporting tracks ([#5282](https://github.com/LMMS/lmms/pull/5282) ) * Fix Invalid warning about "dummy-MIDI-client" ([#5509](https://github.com/LMMS/lmms/pull/5509) ) * UI improvements * Note selection: Editing values works in dialog ([#5438](https://github.com/LMMS/lmms/pull/5438) ) * Bug Fixes * Piano Roll - Fix retrigger with vol/pan sliders ([#5271](https://github.com/LMMS/lmms/pull/5271) ) * Fix a rare crash on export ([#5293](https://github.com/LMMS/lmms/pull/5293) ) * Fix LMMS not launching when AppImage has spaces in name ([#5297](https://github.com/LMMS/lmms/pull/5297) ) * Fix vertical piano being unresponsive when clicked too fast ([#5262](https://github.com/LMMS/lmms/pull/5262) ) * Fix crash with Grooove VST ([#5300](https://github.com/LMMS/lmms/pull/5300) ) * Fix crash on deleting instrument with controller connections on knobs ([#5306](https://github.com/LMMS/lmms/pull/5306) ) * Fix notes being placed at negative positions on MIDI import ([#5343](https://github.com/LMMS/lmms/pull/5343) ) * Fix scrolling direction in the song editor due to stuck Ctrl/Shift ([#5286](https://github.com/LMMS/lmms/pull/5286) ) * Fix stuck notes with Helm VST on tempo automation ([#5365](https://github.com/LMMS/lmms/pull/5365) ) * Fix file factory delimeter position ([#5378](https://github.com/LMMS/lmms/pull/5378) ) * Fix a muted demo project "Greippi - Krem Kaakkuja (Second Flight Remix)" ([aeac24c](https://github.com/LMMS/lmms/commit/aeac24c06d1a839b242d7738e1412f068508cb4a) ) * Fix controls linking misbehaviors ([#5336](https://github.com/LMMS/lmms/pull/5336) ) * Fix loading and saving of .fxb/.fxp files on Windows ([#5411](https://github.com/LMMS/lmms/pull/5411) ) * Fix crashes and hangs on importing some Hydrogen drum kit songs ([#5420](https://github.com/LMMS/lmms/pull/5420) ) * Fix freeze when replacing Mallets with another instrument ([#5428](https://github.com/LMMS/lmms/pull/5428) ) * DrumSynth: ensure correct envelope length in any sample rate ([#5467](https://github.com/LMMS/lmms/pull/5467) ) * AFP: fix loading start and loop points if the loop point is automated ([#5472](https://github.com/LMMS/lmms/pull/5472) ) * Select the correct piano key for marking semitones ([#5478](https://github.com/LMMS/lmms/pull/5478) ) * Ensure consistent use of effect gate ([#5475](https://github.com/LMMS/lmms/pull/5475) ) * Fix Piano roll crashing when window is vertically scaled too large ([#5449](https://github.com/LMMS/lmms/pull/5449) ) * Fix some memory errors with JACK audio/MIDI ([#5452](https://github.com/LMMS/lmms/pull/5452) ) * JackMidi: Remove confusing warnings at shutdown ([737fcd3](https://github.com/LMMS/lmms/commit/737fcd3e55827f19fb7bda1813a80a9c0ff55920) ) * Fix SF2 player crashing when file is not a soundfont, with FluidSynth 2 ([#5487](https://github.com/LMMS/lmms/pull/5487) ) * BB editor: fix mouse event affecting wrong beats due to the cursor shape ([#5489](https://github.com/LMMS/lmms/pull/5489) ) * Fix knobs moving too fast on some platforms ([#5360](https://github.com/LMMS/lmms/pull/5360) ) * Fix notes created in BB editor resizing incorrectly when resizing a selection ([#5515](https://github.com/LMMS/lmms/pull/5515) ) * Fix some patterns not being saved in project ([#5537](https://github.com/LMMS/lmms/pull/5537) ) * Localization **Known issues with this release:** * Windows * Software fails to load on some systems (Please see bug [#1173](https://github.com/LMMS/lmms/issues/1173) , [#512](https://github.com/LMMS/lmms/issues/512) ) * No sound/distorted sound on some systems (Forum topics [#604](https://lmms.io/forum/viewtopic.php?f=3&t=604) [#283](https://lmms.io/forum/viewtopic.php?f=3&t=283) ) * Apple * VST plugins (`.dll`) do not work on Apple (Please see bug [#698](https://github.com/LMMS/lmms/issues/698) ) [NextFAQ](https://docs.lmms.io/user-manual/getting-started/faq) Was this helpful? Was this helpful? --- # FAQ | User manual For the complete documentation index, see [llms.txt](https://docs.lmms.io/user-manual/llms.txt) . This page is also available as [Markdown](https://docs.lmms.io/user-manual/getting-started/faq.md) . [](https://docs.lmms.io/user-manual/getting-started/faq#id-1) About ------------------------------------------------------------------------ **What is LMMS anyway?** LMMS is part of a family of softwares known as digital audio workstations, or DAWs. It is a sound generation system, synthesizer, beat/bassline editor and MIDI control system that can power an entire home music studio. With LMMS, sounds and tones can be generated, played, and artfully arranged to create entire tracks with ease. The tools needed to arrange sounds and rhythms to create tracks, layer tracks to create songs, and save songs to an output format are all there, ready for you to use. With a MIDI keyboard, you can also play your music live while composing or performing. **Is LMMS comparable to any commercially available software?** Users may find LMMS has much in common, at least in principle, with Apple's Garage Band, FL Studio (formerly Fruity Loops), Logic Studio, Beat Machine Pro and similar powerful audio tools. In terms of capability, LMMS easily matches the lower to middle-tier professional software available. This makes LMMS a great introduction to audio production. LMMS is also constantly developing. **Is LMMS offered in my language?** Possibly. See [currently supported languages.](https://github.com/LMMS/lmms/wiki/Creating-a-localization#currently-supported-languages) **Is it free?** Yes. LMMS is free and open source. This means that as long as there are people coding for LMMS on their own free time, LMMS will become better and better! [](https://docs.lmms.io/user-manual/getting-started/faq#id-2) Usage ------------------------------------------------------------------------ **How do I create an instrument track in the Beat/Bassline Editor?** Drag it in from the sidebar as you would with the Song Editor! You can open _My Samples or My Presets_ (buttons on the far left side of the window) and double click on the preset to get it there too. **How do I change the note an instrument plays in the Beat/Bassline Editor?** Click on the instrument button on the track. There's a green bar just above the keyboard at the bottom, an orange square indicates the key that is played. Click on the blue bar to change the note. **How do I enable and adjust looping points?** Click on the _enable/disable loop points_ button in the song editor or piano roll. It is disabled by default. Two blue arrows will appear in the upper tracking area of the window. You can adjust these loop points by right-clicking and dragging them or pressing middle and right button. **I made some piano chords in the Song-Editor but now I want to loop them. How to get them to the Beat+Bassline Editor?** Simply hold Ctrl while dragging the instrument handle into the Beat+Bassline Editor. Only the first pattern will follow. **How do I import a drums beat I'd made in Hydrogen?** As of LMMS 0.4.14, you can import your Hydrogen file directly into LMMS. If you exported it as a MIDI, it can be easily imported with Project > Import. Remember to specify a SoundFont file! If on the other hand, you exported it to WAV, you'll have to use the AudioFileProcessor plugin and import it from there. You can import your MIDI the same way too. **How do I import a FLAC, WAV or OGG file?** Through the AudioFileProcessor plugin. **Can I sell my song that I made in LMMS?** Yes. As long as you have just used samples, instruments and effects from LMMS, or know that the external material has correct licenses, you can sell your song created in LMMS. **How do I edit the locations in the sidebar when you open a file in LMMS?** Highlight the folder that you want to be on the sidebar, select it, and drag it to the sidebar. **What do I do when it is pops and clicks at the beginning or end of a note?** Turn up the attack or the release knob. [](https://docs.lmms.io/user-manual/getting-started/faq#id-3) Settings --------------------------------------------------------------------------- **I want to use another soundcard than the default one with LMMS. How to achieve this?** It's recommended to set your preferred audio-interface and it's parameters using the setup-dialog. If this doesn't work for some reason, you can also set the environment-variable "AUDIODEV" to whatever your audio-device is (e.g. _/dev/dsp_ for OSS or _surround40:1,0_ for ALSA). **I want to import MIDI files but it tells me I need to specify a default soundfont?** First download a soundfont for free from the internet. Then in LMMS go to Edit > Settings > Paths (folder icon). Under the "default soundfont file"-section, you can browse for the downloaded file. [PreviousWelcome to LMMS](https://docs.lmms.io/user-manual) [NextInstallation](https://docs.lmms.io/user-manual/getting-started/installation) Was this helpful? * [About](https://docs.lmms.io/user-manual/getting-started/faq#id-1) * [Usage](https://docs.lmms.io/user-manual/getting-started/faq#id-2) * [Settings](https://docs.lmms.io/user-manual/getting-started/faq#id-3) Was this helpful? --- # Installation | User manual For the complete documentation index, see [llms.txt](https://docs.lmms.io/user-manual/llms.txt) . This page is also available as [Markdown](https://docs.lmms.io/user-manual/getting-started/installation.md) . [](https://docs.lmms.io/user-manual/getting-started/installation#min-system-requirements) Minimum System Requirements -------------------------------------------------------------------------------------------------------------------------- * **OS:** Windows 7, MacOS X Lion, Linux * **CPU:** 1.5 GHz x86, x86\_64, or ARM-based CPU with 2 cores * **RAM:** 1 GB * **Available Storage Space:** 100 MB LMMS may run on systems that do not meet these requirements, but its performance or stability is not guaranteed. [](https://docs.lmms.io/user-manual/getting-started/installation#recommended-system-requirements) Recommended System Requirements -------------------------------------------------------------------------------------------------------------------------------------- * **OS:** Windows 10, MacOS X High Sierra, Linux * **CPU:** 2 GHz x86, x86\_64, or ARM-based CPU with 4 cores * **RAM:** 4 GB * **Available Storage Space:** 512 MB More CPU cores, higher CPU clock speed, and additional RAM will increase LMMS's capacity to handle large projects and more plugins. [](https://docs.lmms.io/user-manual/getting-started/installation#installing) Installing LMMS ------------------------------------------------------------------------------------------------- LMMS is available for [Windows](https://lmms.io/download/#windows) , [macOS](https://lmms.io/download/#mac) , and [Linux](https://lmms.io/download/#linux) . While packages are available for many Linux distros, the AppImage provided at [lmms.io/download](https://lmms.io/download/) is the preferred installation method. As of LMMS 1.3.0-alpha, 32-bit (x86) builds of the software are no longer released, and its support has been deprecated. ### [](https://docs.lmms.io/user-manual/getting-started/installation#stable-beta-and-alpha-builds) Stable, Beta, and Alpha builds Stable, Beta, and Alpha builds may be downloaded at the links above, or through the [GitHub releases page](https://github.com/LMMS/lmms/releases) . ### [](https://docs.lmms.io/user-manual/getting-started/installation#nightly-builds) Nightly builds Nightly builds offer bleeding-edge features and bug fixes, at the cost of stability or performance. These builds are mainly intended for testing, but they are able to be downloaded and installed like any other builds nonetheless. Nightly builds may be downloaded at the links above, or directly through [GitHub Actions artifacts](https://github.com/LMMS/lmms/actions/workflows/build.yml) , choose a build output that isn't failing, then head to the "Artifacts" section in the Actions page. Note that a GitHub account is required for downloading them. For Windows builds, LMMS offers two build artifacts, MinGW and MSVC. [](https://docs.lmms.io/user-manual/getting-started/installation#compiling) Building LMMS from Source Code --------------------------------------------------------------------------------------------------------------- Visit the [LMMS development wiki on GitHub](https://github.com/LMMS/lmms/wiki/Compiling) for instructions on how to compile LMMS for Linux. [PreviousFAQ](https://docs.lmms.io/user-manual/getting-started/faq) [NextSettings](https://docs.lmms.io/user-manual/getting-started/settings) Was this helpful? * [Minimum System Requirements](https://docs.lmms.io/user-manual/getting-started/installation#min-system-requirements) * [Recommended System Requirements](https://docs.lmms.io/user-manual/getting-started/installation#recommended-system-requirements) * [Installing LMMS](https://docs.lmms.io/user-manual/getting-started/installation#installing) * [Stable, Beta, and Alpha builds](https://docs.lmms.io/user-manual/getting-started/installation#stable-beta-and-alpha-builds) * [Nightly builds](https://docs.lmms.io/user-manual/getting-started/installation#nightly-builds) * [Building LMMS from Source Code](https://docs.lmms.io/user-manual/getting-started/installation#compiling) Was this helpful? --- # Settings | User manual For the complete documentation index, see [llms.txt](https://docs.lmms.io/user-manual/llms.txt) . This page is also available as [Markdown](https://docs.lmms.io/user-manual/getting-started/settings.md) . The Settings window can be accessed from the Main Menu Bar by clicking "Edit" and then "Settings". [](https://docs.lmms.io/user-manual/getting-started/settings#general-settings) General Settings ---------------------------------------------------------------------------------------------------- ![](https://docs.lmms.io/user-manual/~gitbook/image?url=https%3A%2F%2Fcontent.gitbook.com%2Fcontent%2FsOyi2widgEtSqcjOGVN2%2Fblobs%2FLmfvLoriiY8bg73PMOhq%2FGeneral%2520settings.png&width=768&dpr=3&quality=100&sign=5186e1ca&sv=2) ### [](https://docs.lmms.io/user-manual/getting-started/settings#buffer-size) Buffer Size Buffer size determines the latency of the audio coming out of LMMS, but values too low for your computer may cause unwanted audio artifacts that render the program unusable (Faster computers will be able to handle smaller buffer sizes). If you experience pops, crackles, or stuttering audio, an insufficient buffer size is likely the culprit [(see Buffer Size)](https://docs.lmms.io/user-manual/getting-started/settings#buffer-size) . As of 1.3, Buffer size settings are listed under Audio Settings. ### [](https://docs.lmms.io/user-manual/getting-started/settings#misc) Misc * **Enable tooltips:** This option enables informational tooltips to appear when hovering over controls. * **Show restart warning after changing settings:** This option enables or disables the warning pop-up window that appears after changing settings. * **Display volume as dBFS:** This option changes volume displays to use dBFS, a standard unit across many digital audio workstations, instead of the default 0-100. * **Compress project files per default:** This option saves storage space by using the compressed `.mmpz` save file format rather than the larger `.mmp` format. * **One instrument track window mode:** This option allows only one open instrument window at a time, meaning LMMS will close the previous instrument window when you open another one. * **HQ-mode for output audio-device:** This option improves the quality of playback sound for some output devices. * **Compact track buttons:** This option visually compacts tracks in the Song Editor by hiding track names and rearranging the solo & mute controls for each track. * **Sync VST plugins to host playback:** This option allows VST plugins to utilize the project tempo, effectively allowing them to synchronize with LMMS. * **Enable note labels in piano roll:** This option labels notes with their note name in the piano roll when enabled. * **Enable waveform display by default:** This option allows the master output oscilloscope to be enabled by default. * **Keep effects running even without input:** This option prevents effects from sleeping when they don't have input. * **Create backup file when saving a project:** This option creates a backup save file whenever you save a project, when enabled. * **Reopen last project file on start:** This option opens the last project you worked on when opening LMMS, rather than a blank project, when enabled. As of 1.3, "**Sync VST Plugins to host playback**" and "**Keep effects running even without input**" have been moved to Performance settings, and "**HQ-mode for output audio-device**" has been moved to Audio settings. ### [](https://docs.lmms.io/user-manual/getting-started/settings#plugin-embedding) Plugin Embedding * **No embedding:** display plugins outside of LMMS, as seperate windows. * **Embed using Qt API:** display plugins within LMMS using Qt API. * **Embed using Win32 API:** display plugins within LMMS using Win32 API. As of 1.3, Plugin embedding is listed under Performance Settings. ### [](https://docs.lmms.io/user-manual/getting-started/settings#language) Language This selects the language in which text is displayed. If your language is not included in the available options, learn how you can contribute to localization efforts [here](https://github.com/LMMS/lmms/wiki/Creating-a-localization) . [](https://docs.lmms.io/user-manual/getting-started/settings#directories) Directories ------------------------------------------------------------------------------------------ ![](https://docs.lmms.io/user-manual/~gitbook/image?url=https%3A%2F%2Fcontent.gitbook.com%2Fcontent%2FsOyi2widgEtSqcjOGVN2%2Fblobs%2FELAq0N4p7v1g6P5LwgG9%2FDirectories.png&width=768&dpr=3&quality=100&sign=d3ca5c8b&sv=2) ### [](https://docs.lmms.io/user-manual/getting-started/settings#working-directory) Working Directory This is where the user's own samples, projects, presets, etc. are stored. ### [](https://docs.lmms.io/user-manual/getting-started/settings#gig-directory) GIG Directory This is where the user's own `.gig` files are stored. This is typically somewhere in the working directory. ### [](https://docs.lmms.io/user-manual/getting-started/settings#soundfont-directory) SF2 Directory This is where the user's own `.sf2` files are stored. This is typically somewhere in the working directory. ### [](https://docs.lmms.io/user-manual/getting-started/settings#vst-plugin-directory) VST Plugin Directory This is where the user's VST plugins are stored. These can be either 32 or 64 bit plugins. Note that LMMS only recognizes _VST effect plugins_ in this directory. VST instrument plugins must be [loaded via VeSTige](https://docs.lmms.io/user-manual/instruments/vestige) . LMMS does not yet support VST3 plugins. ### [](https://docs.lmms.io/user-manual/getting-started/settings#ladspa-plugin-directories) LADSPA Plugin Directories This is where the user's LADSPA plugins are stored. ### [](https://docs.lmms.io/user-manual/getting-started/settings#stk-rawwave-directory) STK RawWave Directory This is where the user's STK RawWave files are stored. ### [](https://docs.lmms.io/user-manual/getting-started/settings#default-soundfont-file) Default Soundfont File This is the location of `.sf2` files. If one is specified, the SF2 Player [(see SF2 Player)](https://docs.lmms.io/user-manual/instruments/sf2-player) will automatically load a default SoundFont when an instance is created. ### [](https://docs.lmms.io/user-manual/getting-started/settings#themes-directory) Themes Directory Despite the name, this is actually points to where the _current_ theme is stored. To change themes, set this path to the location of the desired theme. ### [](https://docs.lmms.io/user-manual/getting-started/settings#background-artwork) Background Artwork This points to an image used for the background of the main LMMS window. Leave it blank to use the image provided by the current theme. [](https://docs.lmms.io/user-manual/getting-started/settings#performance-settings) Performance Settings ------------------------------------------------------------------------------------------------------------ ![](https://docs.lmms.io/user-manual/~gitbook/image?url=https%3A%2F%2Fcontent.gitbook.com%2Fcontent%2FsOyi2widgEtSqcjOGVN2%2Fblobs%2FdtfRHQBPAUYJPhRiPAld%2Fimage%2520%283%29.png&width=768&dpr=3&quality=100&sign=a4fb035d&sv=2) The Performance Settings dialog ### [](https://docs.lmms.io/user-manual/getting-started/settings#autosave) Autosave * **AUTO SAVE:** This slider determines the time between auto-saves. * **Enable auto-save:** This setting allows LMMS to periodically save a backup of your project. * **Allow auto-save while playing:** This setting allows auto-saving during playback. ### [](https://docs.lmms.io/user-manual/getting-started/settings#ui-effects) UI Effects vs. Performance * **Smooth scroll in Song Editor:** This setting enables smooth scrolling in song editor. * **Show playback cursor in AudioFileProcessor:** This setting enables the display of the playback cursor in AudioFileProcessor. [](https://docs.lmms.io/user-manual/getting-started/settings#audio-settings) Audio Settings ------------------------------------------------------------------------------------------------ ![](https://docs.lmms.io/user-manual/~gitbook/image?url=https%3A%2F%2Fcontent.gitbook.com%2Fcontent%2FsOyi2widgEtSqcjOGVN2%2Fblobs%2FwvN39MhHKYybgz1UFA7k%2Fimage%2520%284%29.png&width=768&dpr=3&quality=100&sign=43bcfb03&sv=2) The Audio Settings dialog ### [](https://docs.lmms.io/user-manual/getting-started/settings#audio-interface) Audio Interface This option selects how LMMS outputs sound. On macOS and Windows, **SDL** is the recommended interface. * **Dummy (no sound output):** This option disables audio output. * **ALSA (Advanced Linux Sound Architecture)**\***:** * With this interface, you can choose Devices and Channels. * **JACK (JACK Audio Connection Kit)**†**:** * With this interface, you can choose Clients and Channels. * **OSS (the Open Sound System)**\***:** * With this interface, you can choose Devices and Channels. * **PortAudio:** * With this interface, you can choose Backends and Devices. * **SDL (Simple DirectMedia Layer):** * SDL only has one option, a text box where you can specify the device. If you leave this blank, a device will be selected automatically. \* This setting is only available on Linux operating systems. † This setting is only available on Linux and macOS operating systems. [](https://docs.lmms.io/user-manual/getting-started/settings#midi-settings) MIDI Settings ---------------------------------------------------------------------------------------------- ![](https://docs.lmms.io/user-manual/~gitbook/image?url=https%3A%2F%2Fcontent.gitbook.com%2Fcontent%2FsOyi2widgEtSqcjOGVN2%2Fblobs%2F6MwMw7Jl2zR5mWqqfDoy%2Fimage%2520%285%29.png&width=768&dpr=3&quality=100&sign=857dc739&sv=2) The MIDI settings dialog ### [](https://docs.lmms.io/user-manual/getting-started/settings#midi-interface) MIDI Interface This option selects how LMMS receives MIDI input. * **Dummy (no MIDI support):** * This option disables MIDI support. * **WinMM MIDI**\* * **Apple MIDI**† * **Jack-MIDI**‡**:** * Jack-MIDI only has one option, a text box where you can specify the device. This is `lmms` by default. \* This setting is only available on Windows operating systems. † This setting is only available on macOS operating systems. ‡ This setting is only available on Linux and macOS operating systems. [PreviousInstallation](https://docs.lmms.io/user-manual/getting-started/installation) [NextTroubleshooting](https://docs.lmms.io/user-manual/getting-started/troubleshooting) Was this helpful? * [General Settings](https://docs.lmms.io/user-manual/getting-started/settings#general-settings) * [Buffer Size](https://docs.lmms.io/user-manual/getting-started/settings#buffer-size) * [Misc](https://docs.lmms.io/user-manual/getting-started/settings#misc) * [Plugin Embedding](https://docs.lmms.io/user-manual/getting-started/settings#plugin-embedding) * [Language](https://docs.lmms.io/user-manual/getting-started/settings#language) * [Directories](https://docs.lmms.io/user-manual/getting-started/settings#directories) * [Working Directory](https://docs.lmms.io/user-manual/getting-started/settings#working-directory) * [GIG Directory](https://docs.lmms.io/user-manual/getting-started/settings#gig-directory) * [SF2 Directory](https://docs.lmms.io/user-manual/getting-started/settings#soundfont-directory) * [VST Plugin Directory](https://docs.lmms.io/user-manual/getting-started/settings#vst-plugin-directory) * [LADSPA Plugin Directories](https://docs.lmms.io/user-manual/getting-started/settings#ladspa-plugin-directories) * [STK RawWave Directory](https://docs.lmms.io/user-manual/getting-started/settings#stk-rawwave-directory) * [Default Soundfont File](https://docs.lmms.io/user-manual/getting-started/settings#default-soundfont-file) * [Themes Directory](https://docs.lmms.io/user-manual/getting-started/settings#themes-directory) * [Background Artwork](https://docs.lmms.io/user-manual/getting-started/settings#background-artwork) * [Performance Settings](https://docs.lmms.io/user-manual/getting-started/settings#performance-settings) * [Autosave](https://docs.lmms.io/user-manual/getting-started/settings#autosave) * [UI Effects vs. Performance](https://docs.lmms.io/user-manual/getting-started/settings#ui-effects) * [Audio Settings](https://docs.lmms.io/user-manual/getting-started/settings#audio-settings) * [Audio Interface](https://docs.lmms.io/user-manual/getting-started/settings#audio-interface) * [MIDI Settings](https://docs.lmms.io/user-manual/getting-started/settings#midi-settings) * [MIDI Interface](https://docs.lmms.io/user-manual/getting-started/settings#midi-interface) Was this helpful? --- # Reporting a Bug | User manual For the complete documentation index, see [llms.txt](https://docs.lmms.io/user-manual/llms.txt) . This page is also available as [Markdown](https://docs.lmms.io/user-manual/getting-started/reporting-a-bug.md) . [](https://docs.lmms.io/user-manual/getting-started/reporting-a-bug#bug-tracker) Bug Tracker ------------------------------------------------------------------------------------------------- For reporting any kind of bugs, use the [GitHub issue tracker](https://github.com/LMMS/lmms/issues) . Please take a look at other [submitted bugs](https://github.com/LMMS/lmms/issues) before opening a new item as someone else might have reported the same bug. [](https://docs.lmms.io/user-manual/getting-started/reporting-a-bug#gdb) Reporting Bugs with `gdb` ------------------------------------------------------------------------------------------------------- If you are using LMMS and encounter a segmentation fault (crash), please include a full backtrace: Linux Copy gdb /usr/bin/lmms r Then attempt to replicate the crash. Once LMMS crashes: Copy thread apply all backtrace The output of this command is interesting for us! Please either report it to the [issue tracker](https://github.com/LMMS/lmms/issues) or email it to the [mailing list](http://lists.sourceforge.net/lists/listinfo/lmms-devel) . [](https://docs.lmms.io/user-manual/getting-started/reporting-a-bug#reporting-bugs-without-gdb) How to Report Bugs without GDB ----------------------------------------------------------------------------------------------------------------------------------- Linux Copy $ ulimit -l unlimited $ lmms Now when LMMS crashes, there will be a file called "core" in your working directory. The file may be large enough to be worth zipping. [PreviousTroubleshooting](https://docs.lmms.io/user-manual/getting-started/troubleshooting) [NextInterface Overview](https://docs.lmms.io/user-manual/navigating-lmms/general-interface) Was this helpful? * [Bug Tracker](https://docs.lmms.io/user-manual/getting-started/reporting-a-bug#bug-tracker) * [Reporting Bugs with gdb](https://docs.lmms.io/user-manual/getting-started/reporting-a-bug#gdb) * [How to Report Bugs without GDB](https://docs.lmms.io/user-manual/getting-started/reporting-a-bug#reporting-bugs-without-gdb) Was this helpful? --- # Interface Overview | User manual For the complete documentation index, see [llms.txt](https://docs.lmms.io/user-manual/llms.txt) . This page is also available as [Markdown](https://docs.lmms.io/user-manual/navigating-lmms/general-interface.md) . There are 11 main parts to the LMMS interface. These are described in detail in the following chapter. This section gives a brief description of each part of the interface. It also lists the sections of this guide in which each part of the interface is explained in greater detail. For information on the Settings window, refer to [this page](https://docs.lmms.io/user-manual/getting-started/setup) . [](https://docs.lmms.io/user-manual/navigating-lmms/general-interface#menus) Menus --------------------------------------------------------------------------------------- The [**Main Menu Bar**](https://docs.lmms.io/user-manual/navigating-lmms/menu-bar) serves as a general menu for LMMS. ![](https://docs.lmms.io/user-manual/~gitbook/image?url=https%3A%2F%2Fcontent.gitbook.com%2Fcontent%2FsOyi2widgEtSqcjOGVN2%2Fblobs%2F1pi2ocUtRh1t5OtuCFGk%2Fimage.png&width=768&dpr=3&quality=100&sign=ce3251a6&sv=2) Main Menu Bar The [**Toolbar**](https://docs.lmms.io/user-manual/navigating-lmms/toolbar) contains options for managing project files, showing/hiding interface windows, and altering master controls for projects. ![](https://docs.lmms.io/user-manual/~gitbook/image?url=https%3A%2F%2Fcontent.gitbook.com%2Fcontent%2FsOyi2widgEtSqcjOGVN2%2Fblobs%2FXltmnsDtjSlIh9mJD8fy%2Fimage.png&width=768&dpr=3&quality=100&sign=fe5bdc1&sv=2) Tool Bar The [**Sidebar**](https://docs.lmms.io/user-manual/navigating-lmms/sidebar) is used to introduce resources to a project. ![](https://docs.lmms.io/user-manual/~gitbook/image?url=https%3A%2F%2Fcontent.gitbook.com%2Fcontent%2FsOyi2widgEtSqcjOGVN2%2Fblobs%2F6twKc7oRalV6y5UFbkOW%2Fimage.png&width=768&dpr=3&quality=100&sign=13d1aeb6&sv=2) Sidebar (Instrument Plugins tab) [](https://docs.lmms.io/user-manual/navigating-lmms/general-interface#windows) Windows ------------------------------------------------------------------------------------------- Most of the work you do creating songs in LMMS will be done in the program's windowed GUI. Each type of window has a specific purpose. The [**Instrument Window**](https://docs.lmms.io/user-manual/navigating-lmms/instrument-window) contains settings for an instrument. ![](https://docs.lmms.io/user-manual/~gitbook/image?url=https%3A%2F%2Fcontent.gitbook.com%2Fcontent%2FsOyi2widgEtSqcjOGVN2%2Fblobs%2FnonerSs0ZR6SPon8tGdZ%2Fimage.png&width=768&dpr=3&quality=100&sign=cc3204a5&sv=2) Instrument Window (AudioFileProcessor) The [**Song Editor**](https://docs.lmms.io/user-manual/navigating-lmms/song-editor) contains all the different sound-generating elements and automation clips in a project file. ![](https://docs.lmms.io/user-manual/~gitbook/image?url=https%3A%2F%2Fcontent.gitbook.com%2Fcontent%2FsOyi2widgEtSqcjOGVN2%2Fblobs%2FFDh4jF3B3dQ1j04AQQbw%2Fimage.png&width=768&dpr=3&quality=100&sign=a0207f7e&sv=2) Song Editor The [**Beat+Bassline Editor**](https://docs.lmms.io/user-manual/navigating-lmms/3.8) is where repetitive loops, such as drum or basslines, can be created and contained. It is explained in. ![](https://docs.lmms.io/user-manual/~gitbook/image?url=https%3A%2F%2Fcontent.gitbook.com%2Fcontent%2FsOyi2widgEtSqcjOGVN2%2Fblobs%2FQFAFqaG8SU0TZHJZIGVP%2Fimage.png&width=768&dpr=3&quality=100&sign=f59db21&sv=2) Beat+Baseline Editor The [**Piano Roll**](https://docs.lmms.io/user-manual/navigating-lmms/piano-roll) allows you to create and edit note sequences. ![](https://docs.lmms.io/user-manual/~gitbook/image?url=https%3A%2F%2Fcontent.gitbook.com%2Fcontent%2FsOyi2widgEtSqcjOGVN2%2Fblobs%2FzoSu0i0Y1Q40srK4uuMp%2Fimage.png&width=768&dpr=3&quality=100&sign=2e567934&sv=2) Piano Roll The **Automation Editor** allows you to create a profile that any connected parameter can follow. It is explained in [section 3.9](https://docs.lmms.io/user-manual/navigating-lmms/automation) . ![](https://docs.lmms.io/user-manual/~gitbook/image?url=https%3A%2F%2Fcontent.gitbook.com%2Fcontent%2FsOyi2widgEtSqcjOGVN2%2Fblobs%2FmzpTZQr6S4r2vPpJuxKm%2Fimage.png&width=768&dpr=3&quality=100&sign=8f47910c&sv=2) Automation Editor The **FX-Mixer** is where FX channel routing and manipulation takes place. It is explained in [section 3.10](https://docs.lmms.io/user-manual/navigating-lmms/fx-mixer) . ![](https://docs.lmms.io/user-manual/~gitbook/image?url=https%3A%2F%2Fcontent.gitbook.com%2Fcontent%2FsOyi2widgEtSqcjOGVN2%2Fblobs%2Fz2LNKRwuOfIlP4FFlKJU%2Fimage.png&width=768&dpr=3&quality=100&sign=430d1473&sv=2) FX-Mixer The [**Project Notes**](https://docs.lmms.io/user-manual/navigating-lmms/project-notes) window allows you to create notes for yourself in a project file It is a simple text editor. ![](https://docs.lmms.io/user-manual/~gitbook/image?url=https%3A%2F%2Fcontent.gitbook.com%2Fcontent%2FsOyi2widgEtSqcjOGVN2%2Fblobs%2FUNHie5hxAnaijpYvkEvQ%2Fimage.png&width=768&dpr=3&quality=100&sign=3becc9b&sv=2) Project Notes The [**Controller Rack**](https://docs.lmms.io/user-manual/navigating-lmms/controller-rack) is where controllers are added and configured. These controllers allow you to make alterations to connected parameters, much like an Automation Clip would. ![](https://docs.lmms.io/user-manual/~gitbook/image?url=https%3A%2F%2Fcontent.gitbook.com%2Fcontent%2FsOyi2widgEtSqcjOGVN2%2Fblobs%2FXqxIG8Ns5Q8EITHVIMjD%2Fimage.png&width=768&dpr=3&quality=100&sign=bf821ea2&sv=2) [PreviousReporting a Bug](https://docs.lmms.io/user-manual/getting-started/reporting-a-bug) [NextMain Menu Bar](https://docs.lmms.io/user-manual/navigating-lmms/menu-bar) Was this helpful? * [Menus](https://docs.lmms.io/user-manual/navigating-lmms/general-interface#menus) * [Windows](https://docs.lmms.io/user-manual/navigating-lmms/general-interface#windows) Was this helpful? --- # Troubleshooting | User manual For the complete documentation index, see [llms.txt](https://docs.lmms.io/user-manual/llms.txt) . This page is also available as [Markdown](https://docs.lmms.io/user-manual/getting-started/troubleshooting.md) . Make sure you are running the latest version of LMMS before troubleshooting issues. The latest version can be found at [https://lmms.io/download](https://lmms.io/download) . [](https://docs.lmms.io/user-manual/getting-started/troubleshooting#general-troubleshooting) General Troubleshooting ------------------------------------------------------------------------------------------------------------------------- ### [](https://docs.lmms.io/user-manual/getting-started/troubleshooting#my-settings-wont-save) My settings won't save Some users report that they can't save their settings. This is a recurring Windows issue, with reason not known in depth. To solve this problem, follow these steps: * Close LMMS. Make sure nothing from LMMS is running in the background. You can look for this in your "Task Manager". (If you don't know how to use "Task Manager", restarting your PC is a good alternative.) * In versions older than Windows 8, "Documents and Settings" is the folder you are looking for. In Windows 10, look in your "C:\\Users\\\\. There is a file called `**.lmmsrc.xml**`. * Use the search tool to find this file. **.lmmsrc.xml**You _can't rename_ this file, but you _can move_ it. * Move it to one of the folders you have there, e.g. **plugins**. Now restart LMMS. * You should be now asked to enter new settings, and these settings should be persistent. * A terminal command version of this process exists: * Run CMD as administrator * Paste this command: `move %USERPROFILE%|.lmmsrc.xml %USERPROFILE%|.lmmsrc.xml.bak` ### [](https://docs.lmms.io/user-manual/getting-started/troubleshooting#lmms-is-taking-forever-to-load-a-project) LMMS is taking forever to load a project Try adding exceptions in your antivirus for files the project depends on, such as: * LMMS.exe * RemoteVstPlugin.exe * Plugins and their related data [](https://docs.lmms.io/user-manual/getting-started/troubleshooting#audio-troubleshooting) Audio Troubleshooting --------------------------------------------------------------------------------------------------------------------- ### [](https://docs.lmms.io/user-manual/getting-started/troubleshooting#my-audio-is-crackling) My Audio is Crackling #### [](https://docs.lmms.io/user-manual/getting-started/troubleshooting#buffer-size) Buffer Size Your [buffer size](https://docs.lmms.io/user-manual/getting-started/settings#buffer-size) may be too small, resulting in buffer underruns. To fix this, increase your buffer size. Note that this will increase latency. #### [](https://docs.lmms.io/user-manual/getting-started/troubleshooting#audio-interface) Audio Interface Certain [audio interface configurations](https://docs.lmms.io/user-manual/getting-started/troubleshooting#audio-interface) don't play nice with LMMS on some systems. If you are on macOS or Windows, make sure you have SDL selected. On Linux, if PulseAudio is producing these unwanted artifacts, try ALSA instead. #### [](https://docs.lmms.io/user-manual/getting-started/troubleshooting#track-volume) Track Volume Your audio within LMMS may be too loud, resulting in digital clipping. This can be fixed by reducing the volume of the instruments in LMMS (either with the "VOL" knobs or through the mixer). #### [](https://docs.lmms.io/user-manual/getting-started/troubleshooting#volume-envelopes) Volume Envelopes If an instrument has attack or release values small enough, the rapid change in volume can sound like clicks or pops at the beginning or end of each note. Increasing the attack and release values for the culprit instrument's volume envelope can fix this kind of clicking. Ensure that the envelope amount (AMT) is set to full. ### [](https://docs.lmms.io/user-manual/getting-started/troubleshooting#i-cant-hear-anything) I Can't Hear Anything #### [](https://docs.lmms.io/user-manual/getting-started/troubleshooting#dummy) Dummy Certain [audio interface configurations](https://docs.lmms.io/user-manual/getting-started/troubleshooting#audio-interface) (specifically Dummy) just don't work. If you are on macOS or Windows, make sure you have SDL selected. Try to avoid PortAudio if possible. #### [](https://docs.lmms.io/user-manual/getting-started/troubleshooting#jack-transport) JACK-transport If you have JACK selected as your audio interface and you are experiencing no audio output, JACK-transport might not be running. Start an application like `qjackctl` and click on "play" or its equivalent. LMMS should automatically should start JACK-transport on startup, but this fails on some systems. You may also need to connect LMMS to your sound card, using the patch bay in `qjackctl`. ### [](https://docs.lmms.io/user-manual/getting-started/troubleshooting#the-audio-lags-or-is-delayed) The Audio Lags or is Delayed #### [](https://docs.lmms.io/user-manual/getting-started/troubleshooting#buffer-size-1) Buffer Size [Buffer size](https://docs.lmms.io/user-manual/getting-started/settings#buffer-size) is directly related to latency. If you can, try decreasing your buffer size to minimize latency. ### [](https://docs.lmms.io/user-manual/getting-started/troubleshooting#my-effects-especially-echo-or-reverb-are-not-working-smoothly) My effects, especially echo or reverb, are not working smoothly. **Effects running without input** Go to Edit > Settings > General settings (Gear icon). There is a toggleable option "Keep effects running even without input". Make sure this option is _enabled_. If it is disabled, your echo and reverb will stop being active when they no longer detect an input audio, and this can cause them to cut off. If you do not wish to enable this option for any reason (usage of certain very specific noisy plugins being a primary use case), turn up the "Decay" knob of the effect (located next to the "W/D" amount knob) displayed in the effect chain. [](https://docs.lmms.io/user-manual/getting-started/troubleshooting#video-troubleshooting) Video Troubleshooting --------------------------------------------------------------------------------------------------------------------- ### [](https://docs.lmms.io/user-manual/getting-started/troubleshooting#lmms-has-very-small-windows) LMMS has very small windows **LINUX** Try using a shell script: Set `chmod +x