The RIAA is tightening it's grip on those downloading songs illegally. But there are still many online sites offering free downloads that you won't be sued over. Here are a few:
from http://www.digitalalchemy.tv
Digital Alchemy's "Complete Guide to Free Online Music"
1. We7: Free downloads with a 10 second advertisement inserted at the beginning of every track. Restrictions: None.
2. Ruckus: Free unlimited music downloads. 2.5 million tracks in library. Restrictions: DRM, college students only.
3. Slacker: Play music on-demand along with music recommendations. Restrictions: US only.
4. Pandora: Streaming music recommendation service. Restrictions:US only, not on-demand.
5. Last.fm: Streaming music recommendation service. Restrictions: Not on-demand.
6. eMusic: Limited to 25 MP3 downloads during free trial period. 2 million song library. Restrictions: Limited downloads.
7. Qtrax: Unlimited downloads and song plays with contextual ads. P2P-based client forthcoming. Restrictions: DRM(?)
8. Playble: A free music download service from The Pirate Bay. Forthcoming. Restrictions: None.
9. Broadclip: Like TiVo for Internet radio stations. Schedule recordings of your favorite music and download them later as MP3s. Free software download required. Restrictions: None.
10. iLike: Discover new music through your friends. Share your music library. Download free MP3s of new artists. Restrictions: None.
11. MyStrands: Downloadable application to tag, share, manage, and discover new music. Restrictions: None.
12. iJigg: Digg for music. Rate, stream, and download free music. Restrictions: None.
13. SoundPedia: Listen to free streaming music. Create and share playlists. Restrictions: None
14. Haystack: Social network for sharing and discovering new music. Restrictions: None
15. Deezer: Free streaming online music. On-demand. Formerly called BlogMusik. Restrictions: None
16. Seeqpod: MP3 search engine that lets you play music that you find in your browser. Restrictions: None
17. Jango: Free site that lets you play streaming music on-demand along with related artists. Sticks to more popular music selections than Pandora. Restrictions: None
18. Jamendo: Features free downloadable music from independent artists released under the Creative Commons. Feel free to tip the artists if you like their music. Restrictions: None
19. The Hype Machine: Listen to music gathered from blogs around the world. Restrictions: None.
20. Apple's iTunes Music Store offers a new free download each week. Past offerings have included music by Bruce Springsteen, up and comers The Cinematics and Amy Winehouse.