Hi, I think in DDK, there is one sample code called "msvad". It may be the one you want. R. Geller >>I am looking for a virtual audio device that appears to the system as an actual hardware device, but will send the wave output to a file in real-time. The device should be configurable so that the user can select the filename, audio format, etc. also, must be able to create multiple devices. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.de/