Free Music Archive - anyone can download music for podcasts, multimedia presentations, etc.

Freeplay Music - free to use for class assignment within the curriculum; cannot use for an other educational purpose

Incompetech- best one for allowing free download of music

International Music Score Library - contains music scores of classic musice and can browse by computer, timeline, genre, instrumentation and recordings.

Jamendo - free legal music under the Creative Commons license and can be found on the Creative Common website

Podsafe Audio - download free music for multimedia presentations; create by a group of musicians for the purpose of sharing music

Sound Bible- free sound clips, sound effects and sound bites

Royalty Free Music for Educators - as an educator you can sign up to receive a free download of stock music 

Shambles- various links to websites that offer royalty free music