SOUND TRACKS, EFX, MUSIC

A free site where you can search the Web for sound effects and musical instrument samples:   http://www.findsounds.com/ 
A good site for sound effects:  http://www.a1freesoundeffects.com/
Original samples and concerts in mp3 or zip format to download:   http://senso.club.fr/index.html
Media-Tracks offers Royalty-Free Music at affordable prices:    http://www.media-tracks.com/