But available via Torrent for last week or two I believe.

Using it as we Type. Unbelievable! Still no built in Audigy driver. I know there is a Beta 64 bit driver available through creative but c'mon Creative & Microsoft, aren't you guys speaking to each other?

No offence, but you should check more closely. It is XP x64 Edition. The w2k3sp1 is there because ALL x64 Windows versions, including XP and Server 2003, are built on top of Server 2003 SP1. If you pay close attention to the filename, the _pro denotes that it's XP x64 Edition. The x64 2003 Server variants have a different end to the file name although I can't remember what it is. If you're interested, you can check out the Server 2003 customer preview and you'll see for yourself.