Added Features:
To find out if your audio device supports the following features in Windows XP, click here.
For systems using Windows Vista

• Dolby® Digital and DTS® driver decode re-established for sound cards that included decoding in their Windows XP drivers (Not applicable for products that included a 3rd party software DVD player license in the package).
• DVD-Audio playback re-established for sound cards that included the application in their Windows XP software suite (For Windows Vista 32-bit only).
  Requires the latest Creative MediaSource DVD-Audio Player Beta software. Click here to download. 

Fixes:

• Resolves issues of intermittent and random application/system crash when playing games or running applications that use EAX®, DirectSound®, OpenAL and/or ASIO features.
• Resolves issue of volume mapping leading to very soft volume level in systems using Windows Vista with Service Pack 1.
• Resolves issue with distortion and noise occuring in systems with 4 GB of RAM or greater.

Known Issues:

• X-Fi CMSS®-3D feature is not available in Windows Vista 64-bit.