Re: Is this impossible to find?
It would be convenient, but i do not think that anything like that exists. Your best bet is, depending on the thickness of the wall, is to drill a whole in the corner of one of the walls where it wont be noticed; pass a single Ethernet cable through the wall and to your router, then on the side your home theater is on use a splitter so that you can plug both your components into it.
Also in my house I have floor vents in several rooms that let heat up. You can use these vents to run cables through to get to room to room without any drilling. Don't know if this applies to you though.
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