I think that will be the module to use, Michel. I am trying to write a little 'radio station' application that plays music and allows the user to talk through the microphone. I need the code to turn on the microphone and turn it off, in click method under a command button.

I have searched MSDN knowledge base, VFP help, here on the UT, and VFUG, but I have found nothing so far. You are the only responder. Thank you.