MusOpen offers free mp3 files of classical instrumental and vocal music. Definitely bookmark this one. Supporting units: music, composers, history, and background sounds for multimedia projects
PublicDomain4U is full of vintage recordings. Supporting units: jazz, blues, country, folk songs, World War I
Sound Jay has become very popular in our district this spring for our video and podcast projects. With a well designed layout and excellent choices of sound and music, you can’t go wrong. Supporting Units:weather, business, FACS, and backgrounds for podcast projects
Soungle has an amazing amount of sound effects for student projects. These save as .wav files, which work great in most audio and video softwares such as Windows Movie Maker, iMovie, Audacity, and Garage Band. Supporting units: weather, emotions, dance, animals, water, and special effect sounds for podcasts.