I run a stereo cable with stereo mini plugs on both ends from the headphone jack of the TV to the aux input on the front of the Jensen.
We have a Vizio 26" LED flat screen in living room (and a 19" in the bedroom) . . . the only issue with this setup is that the TV speakers turn off when this cord is plugged in to the TV's headphone jack.
Well . . . one more issue is that since the AUX plug is on the front of the Jensen, the cord is visible and dangles from the TV to the front of the Jensen (click attached photo - look closely at top of shot).
I bought a small LG BluRay player with WiFi for the camper as that little remote that comes with the Jensen is kind of a PITA to use, plus plugging in an HDMI cable is a whole lot easier to hookup than the cord that comes off of the back of the Jensen.
I also am going to replace the ceiling speakers with some good ones this winter as the stock speakers are cheapies that sound terrible.