I use GTK Pod as an alternative to iTunes. It got a bit of getting use to but I managed to get along with it quite fine. If you have any problems feel free to PM me.
http://www.gtkpod.org/about.html
I agree with Beefcake, "original music is the best" but it also depends on your music genre. I find the electronic or similar remixes of soundtracks most pleasing as apposed to my favourite music genre but thats my opinion.