Hi Dennis, Thank you for your useful information. > 3. Create a DLL from this driver and point this driver from > "SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32\Terminal > Server\RDP\wave" I investigated the registry on my VISTA/WIN7, but I could not find the "Terminal Server\RDP" key that you said. I think the mechanism of RDP for audio might be different in VISTA/WIN7 and XP. Do you know any information or documents about the mechanism of RDP for audio in VISTA/WIN7? Thanks & best regards, Mana. > hi, > I have done this in XP a long back, i think this should work in WIN 7 > as well. > > 1. why cant you use UMDF for writing a driver using Wave Apis > 2. RDP in XP for audio implements the same technique. > 3. Create a DLL from this driver and point this driver from > "SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32\Terminal > Server\RDP\wave" > 3. this will disable all audio drivers and will only show your driver in RDP > session. > > dennis.scott ****************** 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.com/