Hi! all, How driver know how many channels are there in a wave file? In the ClientDataRange of DataRangeIntersection(), The MaximumChannels seems did not reflect to the real channel number. How could driver know the channels number of the wave file? Thanks! TzuchinPeng ****************** 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/