Comment 0 for bug 1438746

See http://djworx.com/stems-open-format-multi-track-songs-from-ni

Obviously there is nothing concrete yet -- no format, no specs, etc, but the basic outline is obvious: four tracks in one file that play in sync and can be independently looped / cued / etc. Supporting these files requires some analog for Traktor's remix decks, which seem to just be like four regular decks or samplers that are always at the same bpm.

Full support will require major work, but we might be able to get bare-minimum support in (load either full mix or individual stems) with hopefully not too much effort. Likely the actual audio encoding will be something preexisting like FLAC.

Actual design should happen on https://blueprints.launchpad.net/mixxx/+spec/ni-stems