I've created a Generic Activity that allows me to see/hear the audio/visual running on my HP Desktop PC thru my Denon reciever and Sony TV and have assigned it to the name "Extend Computer". When I want a larger audience to see what's happening on the PC I simply hit "Extend Computer" and the content displays on my theater setup. I'm bummed to say I can't find the option to control the volumn via remote...typically every activity that uses my Denon reciever has volumn control via the remote however this Generic Activity doesn't allow it. Did I miss something during setup?