Hi, I would like to use DirectKS to access directly the usbaudio.sys to capture audio from an external usb device. I read about DirectKS, AVStream and audio.sys articles, but i can't find a way to understand really how to start my application... Does anyone can give me a link or any help to understand at a higher level what are the differents steps and call i have to do to find my device, and communicate with it in that way? Thanks in advance, nugen