I don't mind shelling out $99 for a new device if it is easy to use and does what I want. But basically with the new airplay, say I was watching youtube on my ipad and when I walk into the living room can I just tell it to stream to the tv right away? Do I have to adjust my tv's input source? I have a cable box, a mac mini, and if now an apple tv all that source jumping will be such a hassle. Anyone know?