Damn it people! My wife wants to do some video work and needs some background music, good luck finding it these days. Anyway, it really annoyed me that you really just can't find anything decent. We did find some okay sites that have some good content so I figure I'd share. First, if you want to check if a song is safe from, or not controlled by, the RIAA visit RIAA Radar.

 
Here are a few sites to visit if you are looking for some safe royalty music for a video project or whatever. There may be more...

Creative Commons Audio

Jamendo

Musikethos

Internet Archive (read closely)

Dejunair

Opsound 

Audiofeeds.org