So hopefully you’ve all got your Audigy’s working in 5.1 now. If you haven’t you need to go back and read Working 5.1 Audigy Series Vista Drivers. As far as I know this fix will work on most Creative Labs sound cards in Vista 32bit and 64bit.
5.1 sound is great when it works. Mine worked for me playing DVD’s and playing games, but when I played multi channel mp3 through Windows Media Player the sound would be 2 channel only.
Creative Labs released a FAQ that said:
“Will decoding of Dolby Digital and DTS signals be supported in the future? If not, why not?
These functions are not supported at driver level in Windows Vista and going forward will be supported at application level by applications such as Power DVD or WinDVD.”
What a load of rubbish! Creative Labs removed Dolby decoding on their mainstream drivers, yet saw fit to leave the feature in Dell drivers!
Please Note: The follow method is the advanced manual method. I strongly suggest you try the recently added Audigy Series Vista Driver Installer Package before you try this manual install.
Firstly we need to download the Vista x86 X-Fi driver from Dell. Just go on the Dell site and get these Dell drivers. Now extract the R144728.EXE file (again using WinRar) to a folder but dont install it just cancel after extracting.
All you really want are two files that you can find located in your newly extracted folder; R144728\Drivers\wdm\win2k_xp\i386\
These files are ctac32k.sys and ctdvda2k.sys. Copy them and place them into your c:\windows\system32\drivers folder, replacing existing versions.
Now reboot and afterwards you’ll have a brand new tab in the Creative Audio Console (CAC -lol) labelled “Decoder”.
Now you can enable the internal decoder and your SPDIF IN can now decode DTS. Now you can use more than 2 speakers in Windows Media Player when playing .avi or .mp3 with multichannel soundtracks.
I hope this fix helps somebody as much as it helped me.