Hi. I have sony DAV-DX255 surround sound DVD player. It connects to my LG50LB6300 with the rca component and I get to watch DVDs with the surround sound. However what I want is to use the surround sound for general cable Netflix instead of the tv speakers. But the surround only works if I play it through dvd is there a converter I can use that would allow me to use the surround sound instead of tv speakers