So I decided to try reverse engineering a Windows driver yesterday, and came across this om Microsoft's site. It's a preliminary audio driver writer's guide for the Longhorn low latency audio system, they call it WaveRT.
Anyway if it works like they claim, it implies the middle layer is quite powerful. It's a fascinating read. The really interesting stuff is in the Word document. http://www.microsoft.com/whdc/device/audio/wavertport.mspx http://download.microsoft.com/download/5/b/5/5b5bec17-ea71-4653-9539-204a672f11cf/WaveRTport.doc Lee
