Here is my problem..... I have one cable connection in my living room. It is not in a good spot. I need one on another wall, but the first cable installation guy said he could not get one over there. Will one of these wireless A/V transmitters solve my problem? Can I plug it into my cable connection and then send it over to my TV across the room? Or if I can't do that, can I attach it to my TV in another room and relay the cable to my TV in the living room that way? I have tried googling, but can't really figure out how these transmitters work.