If you have access to a Mac OSX machine (non Core Duo) you might be interested in a new Audio Application i have just made with Max/MSP.
It's called Forester and with it you can create compositions and re-mixes by threading your way through a dense forest. Sound weird? Yep it does, but it's fun and sounds nice too. You can use audio from a CD or files from your hard-drive.
I'm hoping some kind soul will help me compile a PC version of this - any takers?
Have fun! And if you enjoy it please spread the word.