Today's the big day! Check out Copyfight for news and updates specific to the case. I know better than to reproduce the same links in a spate of duplicativeness.

You can check out the briefs at Eldred.cc. If you don't know how to read a brief, refer thyself to LawMeme's Law School in a Nutshell, Parts I, II, & III. Lucky you, Eldred v. Ashcroft is used as an example!

Unfortunately, nobody should get their hopes up on audio of the proceedings -- the marvelous nine don't release their stuff to the National Archives until the next term. You'll have to rely on the press for your accounts (unless someone has a fantastic memory and wants to share). The Court does not allow members of the public to take notes. In fact, if the question were to arise, I might even go so far as to suggest the Court might support a media/non-media distinction in the First Amendment context (despite the Constitutional text).

Transcripts should be available on the Supreme Court website in about 15 days and also on Lexis [USTRAN library] & Westlaw [SCT-ORALARG database]. If you're completely nuts, you can buy a copy for five bucks a page before the transcript is released to the public from Alderson Reporting, the exclusive transcriber.