I had a problem with the C-Media on board sound controller where randomly in windows (starting from logging in to playing music for hours) the computer would freeze: no stop errors, keyboard and mouse locked... Sometimes my harddrive activity light would stay lit while frozen. Once I went into safe mode and unistalled the device then disabled it via the BIOS, then my freezing disappeared. If you use this board and want digital out, then invest a little money in a SB Live! OEM sound card and the digital I/O addon card from here: hxxp://digitalaudio.co.kr/english/shopping/shopping.htm
If anyone has this problem and wants more info of my setup, PM me...
Later,
CaP