The Freesound Project is a collaborative database of Creative Commons licensed sounds. Freesound focusses only on sound, not songs. This is what sets freesound apart from other splendid libraries like ccMixter. New to this site?
Metaweb is linking to massive content on the web, drawing relationships...[and making it possible for]"you to add high quality structured information to your websites, mashups, and applications without worrying about restrictive corporate licenses. All