Okay, so you want to connect your DVD player to your TV and then have your TV just bypass that data to the receiver? I guess its possible but I dont see the point. If your DVD player doesn't have digital optical, then use digital coaxial and connect to TV. Then use optical to connect TV to receiver.
I am surprised your DVD player does not have optical output, even $15 DVD players have them. Your DVD player must be a decade old.
Just to clarify, the coaxial cable is connected to the DVD player, and the sound system works fine while playing DVDs. I want sound system audio to replace the TV's audio. So when I watch cable television I am using the DVD's audio system. I believe connecting using digital optical will do the same thing: Works on DVDs, but doesn't on cable television(I'm not sure on this). Is this possible and how can I do this?