1st Thanks Uwe for responding. 2nd I forgot to mention that this is for recording->you can't really do anything on playback as it opens a stereo channel even if you play mono channel. So the problem is recording->it opens 1 channel with stereo flags??? Waldemar UK> Waldemar Haszlakiewicz schrieb: UK> Hi guysI have a small problem here: UK> I have just added mono support to our driver ->done a test in UK> Wavelab and dwChannelMask is still set to KSAUDIO_SPEAKER_STEREO. UK> nChannels gets 1 as supposed to, but now how should I know which UK> channel to open if it still wants to open a stereo channel? UK> Is there a default one->like left or is there something else here? UK> Waldemar UK> UK> Hallo Waldemar, UK> our DIGI96 driver outputs the mono stream from the app on both channels. UK> Someone told me that this is what the users expect, but I'm not really UK> sure about that. UK> Another possibility: To add a device to access the second mono channel. UK> Uwe****************** UK> WDMAUDIODEV addresses: UK> Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx UK> Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe UK> Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe UK> Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx UK> URL to WDMAUDIODEV page: UK> http://www.wdmaudiodev.de/ ****************** 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/