University of California Santa Barbara Library site that digitizes, preserves, and distributes cylinder (an early audio reproduction format) audio recordings. All materials may be freely shared, distributed, and used noncommercially according to CC 2.5 license.

Community music remixing site featuring remixes and samples licensed under various Creative Commons licenses.

Established in 2005 by the Music Technology Group of Universitat Pompeu Fabra, Barcelona, Spain, Freesound currently hosts an extensive collection of audio clips, samples, recordings, and other sounds that carry various Creative Commons licenses.

Collection of Soundcloud music carrying various Creative Commons licenses.

Gigantic collection of music, sound effects, and other audio that fall under either public domain or Creative Commons guidelines.