Creative Commons Music
 

I'm not sure if it's been mentioned elsewhere, but another great source for CC music is here:

SoundClick Business - license music tracks, songs, loops, and beats

I just recently discovered it, there are almost [edit]500,000[/edit] CC songs in their library...

Regards,
Aaron

At Digital Juice - DJ Downloads
you can download digital juice music for free.
You need to register and sign up for their newletters.
It's a way for digital juice to promote their cds.

Good luck!