Well, that is strange. The jukebox works by pressing UP when it lights up, if that's not working, then there's something wrong... It seems to be working, but we'll look into it.
The game has no other sounds aside from the jukebox, but we'll add indoors sound effects and a few subtle noises for the outside section. That was the initial plan anyway, but we didn't had time.
And yes, development will continue. When that happens, things like the currency and the machines inside the ship will finally have a purpose.
Thanks again!