1. Update the latest audio driver for VIA codec.
ftp://61.222.191.202/temp/fae/carter/v9200c.exe
2. For Windows XP system, Un-check the "Using Front Jack Detect" setting in VIA HD ADeck utility, then AC97's front audio will work properly.
3. For Windows 7 system, select the tool mark on left corner of VIA HD Audio Deck utility.
Then un-check "Enable front panel jack detection" and click OK.
AC97's front audio will work properly.