Supported operating system:

Windows Vista 32-bit
Windows Vista 64-bit
Windows 7 32-bit
Windows 7 64-bit

Release note:
Fixed Bug

1. IDT control panel section will freeze and become non-responsive(Win7)
2. Dolby APO doesn't work on speaker/headphone,but dolby APO works on SPDIF OUT(Win7)

Supported Devices:
IDT High Definition Audio CODEC
SigmaTel High Definition Audio CODEC