Just 8 years late ...
Back in 2014 Robert del Naja of Massive Attack provided 9 multitracks to developers creating games for Ludum Dare 31. They are still available here: https://archive.org/download/LudumDare31RobertDelNajaStems (2.16GB download)
You can here the mixed tracks here:
Please note the usage permission is: Attribution-Noncommercial-Share Alike 3.0
I remember playing around with a demo and really liking it some time around 2000/2001. I preferred to to FruityLoops (as it was at the time). But I never got round to stumping up for the full version.
Use the mouse and keyboard to have a ghostly image distorting the view of what's beneath instead of one mouse click to minimise/close the plugin and one to reopen it.
It seems to me like one of those ideas that sounded great in the development meeting, but would be a feature users soon forgot about.