Don't forget http://www.ektoplazm.com/ . Completely free music, mostly psytrance and dance, 100s of cds worth, you can't even buy it if you wanted. Lots of it is very good. The business model for artists seems to be to release free music and get yourself promoted enough that you get invited to DJ at electronic music festivals. The record sales are total peanuts so why even bother. The site crowdfunds redesigns and such but mostly people work on it because they really like the music.