Hi I have an old (160GB) and a new apple tv (on two diffrent tv's), and a MacBook. If i wanted to rent a movie which i could watch on all of the three devices, which device should i then rent the movie from? And how do i transfer from one device to another? MB=MacBook OATV=Old Apple TV NATV=New Apple TV MB -> OATV? OATV -> MB? MB -> NATV? NATV -> MB? OATV -> NATV? NATV -> OATV?