New Sigmatel audio drivers are now available from the download section for the XL100 and XL20x (strangely nothing for the XL30x).
XP Driver Version 5.10.5147.0
This update provides support for AAC (Advanced Audio Coding) using an S/PDIF connection.
Vista Driver Version 6.10.5379.0
This update provides compatibility with Windows Vista.
The most immediate difference for me is that the ASIO Control Panel now works in Vista.
