Hi Martin P! Welcome. The same mechanism won't work for both XP and the older OSes. However, the ac97 sample did at one time contain a way to expose multiple sliders for multi-channel, with a topology-mixerline workaround. I believe that code may still be in the sample. Martin P (uryear) Development Manager, Audio Microsoft Corporation As with all public postings, this posting confers no rights and contains no guarantees. ----- Original Message ----- From: Martin P. Sent: Tuesday, September 10, 2002 6:14 AM To: wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] Multichannel Mixer Volume Control Hi everyone, There is a possibility to control different speaker volumes in a multichannel device under windows XP, however under other OS like 98, ME, and W2K only stereo speakers are visible by the windows mixer. Is there a way to acces the different channels under those OS? Thanks all. Martin _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.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/Get more from the Web. FREE MSN Explorer download : http://explorer.msn.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/