I had an owners manual for that one. I lost it. I need to look it up on You Tube. Their instructions really are basic. I use my cell phone or tablet to hook into a music station I like or you can use what ever comes in. Good luck. It is wild and my mother loved this feature. Something else I will miss about her. Her love of camping. Sadly she passed. So every time I use a feature I am reminded of her. Good luck.
You dont need the engine running, if you are hooked up to RV site 30 amp it runs off that, yes you need to turn your battery cutoff. If you are home yes you run it off your house battery. Either way you dont have to run when engine is on. I have a 2020 jayco red hawk 24 B similar to yours.