We have bought a Samsung THX22 home theatre system. We cannot get TV sound through the speakers. Also, how do we tune in the DVD player to the TV?

The problem of the tv sound though speaker and the dvd player,have no audio output maybe the input from the receiver is wrong, always patch the line in to the receiver. patch the av cable one by one.pls see at the back of the receiver. note always patch the cable to audio in.