There is no supported mechanism for this. The driver developer controls what system effects APOs are installed on the hardware. Frank Yerrace Microsoft This posting is provided "AS IS" with no warranties, and confers no rights. -----Original Message----- From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Robert Bielik Sent: Sunday, February 28, 2010 10:53 PM To: wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] Device neutral GFX Dear all, I'm looking into a solution (for a client) where I need a global fx filter in the audio stream just prior to rendering to audio device, such as a sAPO GFX that is not hard wired to a specific audio device. What would be the appropriate approach to this? Saw that the question has arisen before, but I have not found a definite answer yet. TIA /Rob ****************** 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/ ****************** 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/