Jukebox/Radio

Hello, I'm currently working on a jukebox in which you can load up music and switch them in game like the GTA cars radio.
I got a working version but I was wondering what else could be added to make an interesting package for Asset Store. I'm aiming for a 5$ package, just enough for me to buy other assets
Any suggestions on this would be most appreciated

It is also meant to control sounds of all objects in the scene, but I still have a lot of things to consider (should I make a singleton? instantiate a different one each scene? thread it? etc).