Thanks for a very informative video. It's great that you have added explicit support for applications that need to directly access the audio hardware without kmixer-like processing. I hope there will be support for specifying the buffering settings and to programmatically control the sampling frequency at which the hardware operates. When directly writing to the soundcard dma buffers the sample format will be that of the hardware, not necessarily 32 bit floats, right?
Will applications that directly talk to WDM drivers continue to work on Vista?

Flavio.