Free Game Resources
- Free Sound Samples from the OLPC project (CC-BY 3.0 license)
- PDSounds Public Domain Sounds
- Sound Bible Mixed free and non-free sounds but license really visible for each sample
- ?OpenOffice.org gallery: /usr/lib/openoffice/share/gallery/sounds
- Jamendo - music licensed through one of several Creative Commons licenses or the Free Art License (filter by free licenses). Sometimes there's a problem with downloading as Ogg Vorbis, but there's a work-around with a direct URL.
- Wikipedia list of full length copyleft/public domain musical works available on Wikipedia or Wikimedia Commons
- The Mutopia Project: free music scores and midis (CC-BY and CC-BY-SA)
- Internet Archive's Open Source Audio: various recordings, but apparently most files lack a license statement
- incompetech - CC-BY music by Kevin McLoad (including piano recordings of public domain classical tunes), searchable with a tag system by genre and feel.