http://www.amazon.com/BlueRigger-High-Speed-HDMI-Cable/dp/B004GW25WY/ref=sr_1_3?ie=UTF8&qid=1406732028&sr=8-3&keywords=long+hdmi+cable
You said 50 ft. With one of these and the converter I posted you can mirror your desktop onto your tv in the other room. It does audio too so all you need is the one cable running.
OK thanks. I’ll see if I can get one of those rigged up.