The Internet Archive is a digital library of internet sites and other cultural artifacts in digital form, including audio, moving images, texts, and archived web pages. See the Case Study for more information on Case_Studies/Internet Archive.
SoundCloud is a music and audio sharing community that allows artists to upload its works under the full suite of CC licenses. Its set of tools integrate nicely across the web, with adoptions from well known artists and labels.
Jamendo is a music platform offering artists the ability to promote, publish, and be paid for their music made available for download under Creative Commons and the Free Art licenses.