I understand how to hook my TV up to my stereo already, that's not the question...ultimately, I have my computer across the room from my entertainment unit, but don't know what I need to get my downloaded flicks, and my Itunes to play through it. How do I hook it up and what accessories do I need? And is there one (of what I need) long enough to hook this all up from across the room. Thanks in advance for any help I get.