Audio

Jamendo: http://www.jamendo.com/es

Magnatune: http://magnatune.com/

CCMixter: http://ccmixter.org/

Free Music Archive: http://freemusicarchive.org/

Free Sound: http://www.freesound.org/

Public Domain Sounds: http://www.pdsounds.org/

Sound Bible: http://soundbible.com/