I hope this is the right forumn for my home theater question, even though AppleTV is not involved. I have my home theater components (dvd, receiver, and satelite box) in the basement, and the TV upstairs. I am running it all through an IR kit. I also have a Macbook Pro. Before my new home theater, I would use a mini-displayport+USB to HDMI adapter and an HDMI cable to plug my computer into my TV, and then open iTunes, manually "move" it over to the TV, start a movie and go full screen to watch (and hear) a movie on my TV. Now, with the receiver in the basement, if I want to use the surround sound to watch iTunes movies. The issue is, if I plug in the adapter, from the basement I cannot see the TV side by side, to move iTunes over, and set full screen, and all that. Is there a way to default the Macbook to make the TV the primary screen when the adapter is plugged in, and it's outputting? That way, I can plug it into the receiver in the basement, and then head back upstairs and use my iPhone Remote to play my iTunes movies, or VLC or whatever. Thanks all.