I got the error message C00D0BBF while using Windows Media Player while TRYING to play a Halo 2 demo video from
http://movies.teamxbox.com/halo2/halopart4.wmv , that's part 4. I am downloading that right now. So that might work, but I doubt it. The other 3 demo videos didn't work. I got the website from the forums at Xbox.com, and others have watched it. WMP says the file is corrupted or invalid. If your a gaming fan, you might like that link - erase the halopart4.wmv part and it may go to the 'index' of the Halo 2 demos.
Windows Media Player 9, Windows XP Home, Dell Dimension 4600 Desktop PC.