Hi. I apologize for the newbie question. Just want to get the opinion of the experts on this forum. I have a powerbook, a PS3 and an XBox 360 and a Samsung HD TV. I also have in iPhone4. I want to add to this system the ability to play my iTunes media (mostly music, but video would be nice too) but also leave it capacity flexible for the next. Is Apple TV the solution I'm looking for? I would also like to add a speaker system (the space that my TV in is rather small). Any recommendations?