.....Mitsie, can you not input the dvd player with the TV cable attached to the dvd player like you presently have it, into the Durabrand, let's call it, receiver?....look for words on the back of the Durabrand....is there a "video out", and a "video in?"....is there an "audio in", with "left and right?"....I suspect you want to use the TV as a monitor only, tuned to channel 3....and the TV gets the "video out" from the receiver by probably one side of rca pin-jacks, to video "in" at the TV....now, the audio stays at the Durabrand, with all six speakers connected "correctly" to the Durabrand....I don't see why this wouldn't help, but for sure get all six speakers going at one time, somehow, or I'd suggest you take it back......
....edit....and, welcome to Audioholics.com, Mitsie....very good first post....