Hi i am looking into buying an apple t.v for myself for my birthday and was wondering about two question that i have been unable to find an answer, please help me. 1. I know apple tv streams photos and music from your computer but what about purchased movies and tv shows are they streamed from your computer or from the internet on your itunes account? 2. If i have to use my computer to stream everything then does it have to be on and itunes open or can i have it closed? Thank you very much for any info.