http://www.nubeat.org/

NuBeat offers thousands of songs, instrumentals and more, all
professionally recorded and produced. We believe in the message in our
songs so much, that we're offering them to the general public Free of
charge. Yes, that's right. Download as much as you want. We'll never
charge you a penny. Choose from Rap and Rock to Christmas and Country.
Unlimited downloads! We have it all.