I find pretty much all of my music from Metal Kingdom http://www.metalkingdom.net/main/

Hey Jamie. I built one of them, and love it. Only caveat for me is the size (tad big for my liking) Also, theres enough room in the tin for a spare 9volt battery, which is great because they drain normal 9 volts pretty quickly, so id advise that you use rechargeables ( can be picked up on...