More music

Added a few more tracks for exercising to - still in the "cinematic" genre, lots of percussive hits. I'm still debating as to whether to just throw in the "tribal" or "edge" music right now or wait a while.

I guess at some point I may also add some "weighting" to the new music, so the newer it is, the more likely it'll show up in a workout. Right now it's the luck of the draw - by chance alone, if you burned off a new workout, you may or may not hear the new stuff.