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faq [2012/01/18 10:10]
nachtigall [What music file formats can Mixxx play?] undo (was misunderstanding)
faq [2015/06/20 18:00]
be.ing moving library deletion question from troubleshooting page to here
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 Also see the [[Troubleshooting]] page. Also see the [[Troubleshooting]] page.
  
-===== How do monitor ​one track in the headphones with the other playing out the main output? =====+===== How can hear one track in the headphones with the other playing out the main output? =====
  
-This requires either a multi-channel ​sound card or multiple sound cards. ​Note that nearly ​all built-in ​sound cards have only one output pair, so you will need to add a second sound card with one or more additional output pairs. See [[faq#​does_mixxx_support_multiple_soundcards|below]] and the [[hardware_compatibility#​sound_cards|sound card information]] page for more information.+This requires either a sound card with 4 (mono) output channels ​or multiple sound cards. ​Nearly ​all sound cards built into computers ​have only one output pair, so you will need to add a second sound card with one or more additional output pairs. See the [[hardware compatibility|DJ Hardware Guide]] for more information
 + 
 +To make the track playing in your headphones not play on the main output, turn the volume down on the deck you do not want your audience to hear yet (or push the crossfader all the way to the opposite side) then press the headphone ('​PFL'​) button for that deck. This will not turn down the volume in your headphones; it will only turn down the volume on the main output.
  
 ===== How do I record my Mixxx session? ===== ===== How do I record my Mixxx session? =====
  
-Mixxx 1.6.0 and up support recording mixes to WAV and AIFF files. Versions 1.9.0 and up also support recording to MP3 and Ogg Vorbis formats. To choose the format, click "​Options",​ then "​Preferences",​ then "​Recording"​ and set the options as you like. To start recording your mix, click "​Options"​ and select "​Record Mix"​. ​You will then be prompted to enter a file name, and after that, Mixxx will start recording about 5 seconds after you start playing a track. (So to get the beginning, play something, stop the deck, wait 5 seconds, then begin mixing.) ​When you're done recording, go back to "​Options "and toggle "​Record Mix" again, or just exit Mixxx. +Click "​Options"​ and select "​Record Mix". When you're done recording, go back to "​Options "and toggle "​Record Mix" again, or just exit Mixxx. ​To choose ​the recording format, click "Options", ​then "Preferences", ​then "Recording" and set the options as you like.
- +
-===== What'​s ​the best hardware DJ controller to use with Mixxx? ===== +
- +
-"Best" ​is a matter of preference. It depends on what exactly you want to do with a controller. Do you want to control everythingor use one as a bunch of extra buttons in conjunction with turntables? Mixxx 1.7 and up has the ability to provide comprehensive support for any MIDI controller due to its scripting engine, and it ships with mappings for a number of popular controllers,​ a complete list of which can be found on the [[Hardware Compatibility]] page. Community-contributed mappings for more controllers can be found [[http://​mixxx.org/​forums/​viewforum.php?​f=7|on the forums]]. +
-===== Does Mixxx support multiple soundcards? ===== +
- +
-Yes, as of v1.6.0. This means you can have the headphone output coming out of one sound card and have the master output going out another. +
- +
-But **please note** that due to natural differences in clock crystals even between two cards of the exact same model, it's not possible to have multiple cards work synchronously. As a result, you will likely hear pops or skips when using more than one card. Mixxx v1.9.2 and up will lock to the clock of the card used for the Master output so at least these pops aren't heard on the dance floor, but it's always recommended to instead use a single sound card with multiple stereo outputs, such as on a true surround (5.1 channel) sound card: you can use the "front" ​output as your master outputand plug your headphones into the "rear" ​output for cueing. +
- +
-:!: Be aware that sound cards are usually marketed with the number of __monaural__ channels they have, and you need two mono channels for one stereo signal, so you would need at least a four-output card to have Master and Headphones outputs on the same card. (And if you're using vinyl control with two decks, that means you need a card with at least four inputs too.)+
  
 ===== Is it possible to use Mixxx with an external mixer? ===== ===== Is it possible to use Mixxx with an external mixer? =====
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 ===== What's vinyl control all about? How do I use it? ===== ===== What's vinyl control all about? How do I use it? =====
-See the [[Vinyl Control]] page.+See the [[http://​mixxx.org/​manual/​latest/​chapters/​vinyl_control.html|manual chapter]].
  
 ===== Does Mixxx modify the files or structure of my library? ===== ===== Does Mixxx modify the files or structure of my library? =====
 No, Mixxx does not write to or move any files in your library. It's safe to use Mixxx with your iTunes library - Mixxx will not change anything in your library. No, Mixxx does not write to or move any files in your library. It's safe to use Mixxx with your iTunes library - Mixxx will not change anything in your library.
  
-As of Mixxx 1.9.0, there is an option to write metadata changes back to the file tags (e.g. ID3, Xiph/Ogg, APE) but this is disabled by default. You can enable it from the Mixxx Library Preferences.+There is an option to write metadata changes back to the file tags (e.g. ID3, Xiph/Ogg, APE) but this is disabled by default. You can enable it from the Mixxx Library Preferences
 + 
 +===== Yeah, but does it run on Linux? ===== 
 +Yes. Yes it does.
  
 ===== What platforms are officially supported by Mixxx? ===== ===== What platforms are officially supported by Mixxx? =====
-As of release 1.6.0, the official Mixxx **binary** releases attempt to support the following operating systems equally: +  ​* Windows XP and newer. Windows 10 Beta support is spotty. 
-  ​* Windows ​XP (Home/​Pro) ​and Vista (all versions) +  * GNU/Linux, with official binary packages for Ubuntu ​10.04 (Lucidand newer 
-  * Linux Ubuntu (Hardy Heron+  * Mac OS X 10.4+
-  * Mac - Intel Macs (OSX 10.4+)+
  
-We also support the following platforms through binary releases on a best effort basis, not all beta releases will be built for these platforms and full releases often lag behind the release cycle by a month or so: +Many GNU/Linux distributions (e.g. Debian) bundle their own copy of Mixxx rather than relying on our official releases, check with your distribution for more details.
-  * Linux - Generic i386 binary +
-  * Mac - PPC Macs +
- +
-Many Linux distributions (e.g. Debian) bundle their own copy of Mixxx rather than relying on our official releases, check with your distribution for more details.+
  
 Of course as an open source project, source is always available to build for whatever platform you work on, either a Linux distribution which doesn'​t provide Mixxx packages or something more exotic. Historically Mixxx has been known to compile on FreeBSD. Of course as an open source project, source is always available to build for whatever platform you work on, either a Linux distribution which doesn'​t provide Mixxx packages or something more exotic. Historically Mixxx has been known to compile on FreeBSD.
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 ===== What music file formats can Mixxx play? ===== ===== What music file formats can Mixxx play? =====
-As of release 1.8.x, Mixxx supports the following file formats: 
- 
   * MP3   * MP3
   * OGG   * OGG
   * FLAC   * FLAC
   * WAV, AIFF   * WAV, AIFF
-  * AAC/M4A (with plugin)+  * AAC/M4A/MP4 (with plugin)
   * WavPack (WV) (with plugin)   * WavPack (WV) (with plugin)
  
-If your music isn't currently in one of these formats (or you don't have a suitable plugin installed,) it won't show up in the Mixxx library. You'll need to use a program like Sox or Audacity to convert it.+If your music isn't currently in one of these formats (or you don't have a suitable plugin installed) it won't show up in the Mixxx library. You'll need to use a program like Sox or Audacity to convert it. 
 ===== What happens if a file's sample rate is different from the sound card rate? ===== ===== What happens if a file's sample rate is different from the sound card rate? =====
-Mixxx performs sample rate conversion on the fly. +Mixxx performs sample rate conversion on the fly.
  
-Note that the quality of the re-sampling depends on the setting of the //pitch behaviour//​. Having key lock disabled ("​vinyl emulation"​ in 1.8.x and below) will use linear interpolation,​ which doesn'​t sound very good (you will notice graininess and increased noise, especially obvious on high, long notes). When you enable key lock ("​pitch-independent time-stretch"​ in 1.8.x and below,) Mixxx will use a vocoder-based algorithm from the SoundTouch library, which sounds a lot better (but is not recommended when scratching.)+Note that the quality of the re-sampling depends on the setting of the //pitch behaviour//​. Having key lock disabled ("​vinyl emulation"​ in 1.8.x and below) will use linear interpolation,​ which doesn'​t sound very good (you will notice graininess and increased noise, especially obvious on high, long notes). When you enable key lock ("​pitch-independent time-stretch"​ in 1.8.x and below) Mixxx will use a vocoder-based algorithm from the SoundTouch library, which sounds a lot better (but is not recommended when scratching).
  
 ===== How can I move my music to another folder or hard drive without loosing information like bpm or cue points? ===== ===== How can I move my music to another folder or hard drive without loosing information like bpm or cue points? =====
-Unfortunately, ​as of today (mixxx 1.10) this does not work automagically but needs some manual fiddling with the music configuration files. Here is one way of doing it:+Unfortunately,​ this does not yet work automagically but needs some manual fiddling with the music configuration files. Here is one way of doing it:
  
   - **Backup your mixxx configuration files** (under Linux, this is ''​.mixxx/''​ in the home folder)   - **Backup your mixxx configuration files** (under Linux, this is ''​.mixxx/''​ in the home folder)
   - Move your music folder to the new folder or new hard drive   - Move your music folder to the new folder or new hard drive
-  - Install //SQLite Manager//, which is a firefox extensions ​that lets you manipulate the mixxx database: https://​addons.mozilla.org/​de/​firefox/​addon/​sqlite-manager/​+  - Install //SQLite Manager//, which is a Firefox extension ​that lets you manipulate the mixxx database: https://​addons.mozilla.org/​de/​firefox/​addon/​sqlite-manager/​
   - Open the SQLite Manager from within firefox. Within SQLite Manager open the file ''​mixxxdb.sqlite''​ that can be found in your mixxx configuration folder   - Open the SQLite Manager from within firefox. Within SQLite Manager open the file ''​mixxxdb.sqlite''​ that can be found in your mixxx configuration folder
   - Go on ''​Execute SQL''​ and enter: <​code>​update track_locations set directory = replace (directory, '/​old/​path/​DJ/​Music/',​ '/​new/​path/​DJ/​Music/'​); ​   - Go on ''​Execute SQL''​ and enter: <​code>​update track_locations set directory = replace (directory, '/​old/​path/​DJ/​Music/',​ '/​new/​path/​DJ/​Music/'​); ​
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   - Then hit ''​Run SQL''​. The above statements will replace all instances of ''/​old/​path/​DJ/​Music/''​ to ''/​new/​path/​DJ/​Music/''​ in the field of //​location//​ and //​directory//​ of //​track_locations//​ table.   - Then hit ''​Run SQL''​. The above statements will replace all instances of ''/​old/​path/​DJ/​Music/''​ to ''/​new/​path/​DJ/​Music/''​ in the field of //​location//​ and //​directory//​ of //​track_locations//​ table.
   - Start ''​mixxx''​ and under settings change your music folder to the new one. If you want you can do a rescan to check that the music files do not turn up twice suddenly (if you are on linux, do especially check music files which where in symbolically linked directory). Check if bpm and other meta infomation like cue points are still stored with the files.   - Start ''​mixxx''​ and under settings change your music folder to the new one. If you want you can do a rescan to check that the music files do not turn up twice suddenly (if you are on linux, do especially check music files which where in symbolically linked directory). Check if bpm and other meta infomation like cue points are still stored with the files.
 +
 +===== How do I delete my library file? =====
 +
 +Make sure Mixxx is closed, then look for "​mixxxdb.sqlite"​ (or "​mixxxtrack.xml"​ if using Mixxx 1.8.x or below) in:
 +  * Windows: ''​%USERPROFILE%\Local Settings\Application Data\Mixxx''​
 +  * Linux/​BSD/​Unix:​ ''​~/​.mixxx''  ​
 +  * Mac OS X: ''​~/​Library/​Application Support/​Mixxx/''​
 +    * If using Mixxx 1.8.x or below it is just like on Linux in ''​~/​.mixxx''  ​
 +
 +If you can't find it, search your computer for "​mixxxdb.sqlite"​ (or "​mixxxtrack.xml"​ if using Mixxx 1.8.x or below)
 +  * If on Windows, Click Start->​Run,​ type ''​%USERPROFILE%\Local Settings\Application Data\Mixxx''​ and click OK. 
 +    * If you want to use "Find files/​folders",​ make sure to open "​Advanced Options"​ and mark "​Search Hidden Files/​Folders"​.
 +  * If on Mac OSX, press Shift-Command-G or "Go to folder..."​ command in the Finder'​s Go menu. Then enter ''​~/​Library/​Application Support/​Mixxx/''​.
  
faq.txt · Last modified: 2015/06/20 18:00 by be.ing