A VISTA DRIVER for the Creative Sound Blaster Audigy series of audio devices has been posted at Warp 2 Search, albeit in beta form.
The driver (2.18.0000 Beta) comes with the usual caveats - there is no technical support as yet and the release notes are peppered with warnings not to go fiddling with it unless you really know what you're doing - but initial indications seem to show that the thing actually works.
The download supports the whole SB range with the exception of the Audigy LS, Audigy SE and Audigy Value.
The driver runs Dolby Digital and DTS for sound cards that included decoding in their Windows XP drivers as well as DVD-Audio playback, which requires the latest Creative MediaSource DVD-Audio Player Beta software.
The beta also fixes a number of issues from the XP version including random crashing when playing games or running applications that use EAX, DirectSound, OpenAL and/or ASIO features. µ
For more info and a download link head over here.
Hmmm, isnt the bigger problem issues with Vista and X-fi cards?

I would have thought that was the bigger fish to fry, rather than out-of-date audigy :(
Several Audigy cards are hardly "whole" SB range.. When they support everything from (at least!) SB Live! 5.1 to new X-Fi PCI-E cards, than it will be "WHOLE SB RANGE". For me, this is just a driver supporting 6-7 cards ou of the WHOLE RANGE.
"there is no technical support as yet and the release notes are peppered with warnings not to go fiddling with it unless you really know what you're doing"

Was there ever any technical support from Creative in the first place?

Creative lost me as a customer long ago...