No, really, free and legal.

Okay, granted, it's probably music from indy bands that you've never heard of before, but, hey, it's free.  And?  You have the joy of knowing that you'll be discovering bands that your hipster friends have never heard of before.  For real.  Also, did I mention that it's free and legal?  Yeah, so, why not go check it out.
The site is Epitonic.com

C'mon, it's Friday and not like you were really working anyway....