2) Get a remix (or any song). I find music with fewer drums work better.
3) Play it in the Sound Stretch program. I usually try around 10x.
The results can be surprisingly cool. For example, I'm listening to AmiGamer's Monkey Island Mega Monkey Medley at 10x and it sounds like a Hans Zimmer soundtrack or something.
I think the band The Birthday Massacre did get some music ideas from this utility.
I rendered the first mp3 I find on my hard drive and it's tune becomes the style of this band's basic instrumentation.
I rendered the second one and again the same result.
But anyway this is a very interesting stuff indeed.