Does anyone use Airplay with their 673/773? Running iTunes (from my Windows laptop), it seems to have trouble finding the receiver. I have network standby on, but it won't pick it up. The only workaround I've found is to start iTunes, turn off network standby, turn the receiver off, then turn the receiver back on (and make sure the input is Airplay). At this point, the Airplay icon shows up in iTunes and it can see the receiver. Once I get it connected, I can turn network standby back on (although I'll likely have the same problem next time).
DLNA from my phone works fine. What I want to do is remote control iTunes on my laptop using my Android phone. I will try remoting Windows Media Player, but I prefer the iTunes interface.
On an unrelated note, if anyone is annoyed about the lack of component input transcoding to HDMI, I bought a component-to-HDMI converter from monoprice for $40 to connect a DVD player. I don't use the receiver to upconvert (TV does it slightly better), so all it's really saving me is another run of cables from the AVR to the TV, and that only if the DVD is outputting 480p and opposed to 480i, but still. To the AVR it's just another HDMI input--upconversion works, if I wanted to use it.