I don't know about iTunes, but I found that hooking a laptop up to the tv was as easy as buying a hdmi cord, plugging one end to the laptop and one end to the TV. You then find the hdmi input setting on the tv (we have a source button for tv vs av vs hdmi) and setting the laptop to play on a projector (for our laptops, it's just pressing F4 until you get to"duplicate screens").

I thought it would be hard, but once I worked out how to do it, it was easier than hooking up a dvd player.