I have audio turned off on the HDMI out of my Onkyo so the keyboard volume buttons are all I need. You could program 3 keys for mute, up and down. Make it a Ctrl + so the keys would still have their normal function.Okay, I tried it again and it does control the 922 now. I guess it took a while to get it to work. But I do wish there were simple volume on /off switches on the keyboard so I could easily control the sound on the tv and the a/v receiver too.