Codec: FOURCC "XVID" and/or "Tag 80"

[Mordido]

With Azureus I downloaded "Serenity," the new movie, and I've tried to play it on DivX Player, Windows Media Player, WinDVD Player, and RealPlayer, all to no avail. Windows Media Player produced an error message that (1) Video Date: FOURCC code "FMPR" and (2) Audio Data: Tag 80 are needed. Can you tell me what that means? Is it a codec I need? And if it is a codec, how can I obtain these two files or items? I'm fairly sure that I'll need codec for both a Video Data file and an Audio Data file, i.e. the FOURCC code "FMPR" and the "Tag 80" info. Please advise if I can get these, where I can get them, and how to use them.