I have an Sylvania home theater system 5 speakers and a sub-woofer it also has a DVD players...but no HDMI,just RCA If i am playing a DVD I get surround sound from the speakers,but if i am just watching TV my surround sound doesn't work. I'm I hooking it up wrong or what? - I tried using a optical cable but come to find out both my TV and DVD surround sound the optical is out only.. If I used an Optical to analog converter, will i be ably to plug that into my HDMI port in my TV?