What is your "source" of broadcast? OTA/cable/sat?
Your TV doesn't have an analog audio output...so "red/white cables" is doing absolutely nothing.
You have a digital coax. I'm not downloading a HTiB manual(I don't in general, you own it you can look). It "appears" to have an optical input back there(you linked the wrong page of the manual).
Since the TV has digital coax you need(if this HTiB has an optical)...
http://www.amazon.co...tical converter (these are sold both directions. You need coax -> optical.)
If there is no optical, you need...
However, if you answer back with "I have a cable/sat box"...then that more than likely has an optical. Very rare for those to have a digital coax like the TV does. But then again, I'm used to U.S. STB.
Edited by schan1269, April 20 2013 - 06:48 AM.