Tech ARP send words that Microsoft Windows XP SP3 RC does not support High Definition Audio.
Microsoft Windows XP SP3 RC Does NOT Support HDA
In Windows XP, if we need to run a High Definition Audio (HDA) device, we would have to install the Universal Audio Architecture (UAA) driver. However, this does NOT work for the latest Windows XP Service Pack 3 Release Candidate Release.
If you've already tried installing the Windows XP Service Pack 3 Release Candidate v3264 with a High Definition Audio (HDA) device in your computer, I'll bet you have encountered problems with the audio drivers as I did.
Microsoft Windows XP SP3 RC Does NOT Support HDA