Anyone have experience in using DirectSound for both playback and capture? I was planning just to handle both independently. That is I have written code to capture sound, and now I was going to write code to playback sound (the captured sound has nothing to do with the played back sound and vice versa) as if the capture section didn''t even exist. In the end, I will have something continuously analyzing incoming sound but at the same time I will be able to send out sequences of other (internally generated) sounds. I hope this problem is linear! That is the sum of a Direct Sound program and a Direct Sound Capture program = Full duplex program. No nonlinear interactions?? Any experience or insight is appreciated. (Seems like few work with direct sound capture in this group.) Brian Brian Reinhold