I hate how Creative has gone downhill with their products and the lack of support of drivers.
I gave up on creative drivers and with with the KXproject, an open source driver set for the SB live and audigy cards. I found it a little complex but after a few mins fiddling with volume settings works really really well. I can actually get DTS pass thru working now
and has been very very stable set of drivers
http://kxproject.lugosoft.com/index.php?skip=1
is the site to the projects homepage
Pain I found is nuking all the creative leftovers on the system rest was easy
Hope this helps