Ok, I have blu-ray rips that I've converted for use with the Apple TV in Handbrake. I'm using the modified Apple TV 3 preset mentioned in the other thread here. Both 5.1 channels. When I add the mp4 to iTunes and play it, this is what's in the controls menu: My Apple TV is connected to my Sony Receiver with 5.1. Is this just itunes, and has no bearing on the digital signal being received by my Receiver? Or am I just getting stereo?