Been having trouble setting up Airplay between my Windows 10 PC and TSR-7850 (both wified.) Someone from another forum helped me with this: "To send content to the Apple TV or stream from iTunes on your PC you need to enable homesharing from the iTunes advanced menu and then enter the same details in settings/computers on the Apple TV. Once enabled iTunes will show the Apple TV as an Airplay device from the bottom right hand corner of its window." But it didn't work (no airplay synbol on iTunes screen (and, of course, no music sent to the receiver) and I got this error message: "Home sharing could not be activated because of an error (5506)." I certainly can use some help. Thanks.