Oyez, the supreme court audio archive previously featured on this site, has recently released all the audio from the Eldred vs. Ashcroft case. Recorded last Fall, the audio of this case is available under a Creative Commons license.

Also featured on that page are SMIL versions of the audio, which display images of the speakers and show the running transcript as it plays, and a recent videotaped lecture from Lawrence Lessig on the subject of copyrights.