http://us.creative.com/support/down...ype=11&x=9&y=17

Fixes:

Resolves the issue for systems with 4 GB of RAM.
Resolves the Digital I/O detection issue when restarting your computer.

Known Issues:

Before installing this driver, close the Creative MediaSource Go! application on your desktop and restart your computer. (After you have installed this driver, you may manually launch the MediaSource Go! application from the Start menu)
When adjusting the master volume in any of the Mode Console, there is no sound output in the rear speakers. (Use the Microsoft Volume Control panel to adjust the master volume)