In addition to the TV/DVD player option, Mike and Carol had a nice Sony car stereo installed with 2 speakers in the galley and 2 in the cabin and it works great. However, the speakers in the TV/DVD player just sound flat so I ran a mini stereo cable (like for your headphones from your phone, etc.) from the audio out on the TV to the Aux In port on the stereo and wow, what a difference. It really fills the cabin with sound when watching TV or a movie.
If you have the TV and stereo installed in your teardrop, I highly recommend running a 1/8" (3.5mm) mini stereo cable to the aux port on the stereo.
If you have the TV and stereo installed in your teardrop, I highly recommend running a 1/8" (3.5mm) mini stereo cable to the aux port on the stereo.