Another thing I have found, Airplay apparently does not work if the unit is hard-wired. Mine is plugged into the same switch as one of my PCs, and yet that PC's iTunes does not get the airplay option, even though I can ping the IP address of the receiver. From all my googling apparently Airplay only works if the airplay device (no matter what it is) is connected directly to the router (if hardwired, no switches or other routers in between). In my case my WiFi is built into my router, and an apple airport that I have works fine.
I assume the receiver will too once I use the YWA-10 wireless adapter that I now had to order. It dismays me though, because I went through a lot of effort to install a hard-wired connection near the receiver just so that I would not have to use a WiFi connection (plus I have other devices like my media player that needs high-bandwidth network access). Due to my network configuration, it is not feasible to run a dedicated cable from my receiver all the way to my router.
I could always just use the apple airport I have and plug it into the audio input, but one of the main reasons I chose this receiver and paid so much for it was because it had Airplay built in, so using an apple airport for airplay and having to switch to its audio input just defeats the whole purpose of the purchase. Hopefully the YWA-10 solves that, but it's an extra $100 I had to blow just for fully working Airplay support
I will post again once I receive and install the YWA-10 and let know if it solved my issue.