I think you can set the Jensen head unit (stereo) to HDMI ARC (it's one of the sources) and the sound will feedback to the stereo. ARC is the "Audio Return Channel" on the HDMI wire that's hooked up. The TV has RCA outputs and the stereo has RCA inputs, but you have to remove it from the cabinet to plug those in to the side of the stereo. You will still be disappointed in the sound with those crappy 2" speakers in the cabinet. 4W per channel is pitiful.
If you're real adventurous and a car stereo enthusiast, you can install an aftermarket amplifier and larger front speakers and a large subwoofer behind the recliners. It completely changed movie watching in my 3790. Great for music too. It only took me one trip to convince the family we needed to upgrade.
