Hello again, I worked through some of the samples provided in the DX SDK and was able to cobble together a very basic audio player (start, pause, stop). Now suppose I want to hookup a microphone or a guitar to the soundcard and listen to the input from the speakers, how would I go about coding an app for that? i.e. how do I ensure that the buffer that I create is populated with samples from the mic input of the soundcard.