I recently upgraded my receiver to a Denon 2312 CI. I had some initial issues with the Airplay feature but have troubleshooted most of them and have been able to use the Airplay from my MacBook Air. The Airplay icon still is not appearing on my Iphone 4s. I am on the same wireless network as the receiver and have had no issues with the Denon App that controls internet radio (Pandora) and volume control for different zones. I really want to be able to use the full capacity of my receiver and without being able to play my music from my Iphone it might get sent back. Once again the only issue I have had is that the Airplay icon is not showing up on my Iphone, it works on the Macbook Air and the Denon App works fine. PLEASE HELP!