Last night I put psycle on the XP box and gave it a try. It's an open source tracker. The pattern editor took some getting used to, but I was able to figure it out and do some interesting things with tweaking effects on a drum kit I put together with samples found on the net. I think this will be great for doing the music for the game. The way it does tweaking makes use of special integration with their packaged virtual instruments/effects. Using cubase-style vst's means tweaking thru midi which doesn't seem as easily done, as far as I can tell. I'll have to try that out with some vsti's I've made via synthedit, which is a great shareware tool for quickly building your own instruments and effects. Synthmaker is a good vst* creation tool too, although you have to pay them to keep using it after the trial period.