Have TV setup with Denon AVR 3700 receiver which has Klipsch speakers also have Sonos setup though out rest of the house. Want to be able to play sound from TV setup to Sonos. Have a Sonos Port that is setup to play sound through Denon to Klipsch. Essentially trying to do the opposite. Play whatever receiver is pushing to Klipsch speakers to Sonos setup. Do I use the line-in ports on Sonos Port? Then which port on the back of Denon do I use. Speaker ports on the bottom left in white are all used.