Qtrax - free and legal music downloads

Search, download and play over 2.500.000 songs.
Qtrax is a free and legal peer-to-peer (P2P) digital music site. Music lovers can discover new music and legally download full-length, high-quality versions of their favorite songs while compensating both the artists and the record labels through non-intrusive and relevant advertising.

jamendo - free, legal, unlimited music

Jamendo offers free access and free download of music tracks, published with Creative Commons licences. On Jamendo, the Artists choose to give access to their music for free to the users.
You can download mp3 music via the http protocol for free, legaly and without limitation, by clicking on the download links, directly from the jamendo player, from the album page or a playlist.