The music in the whole game are working fine, though in the mui mui house the music isn't playing.(the music being part of the upgrades of the house it's kinda sad ^^)

Tested on stable 1.2.1 and 0.9.8, never worked for me.

PS:
I dunno if it's a practice here, but on ardours (another FOSS) issue tracker you can promise donations if issues get solved, which I find nice.
If this gets solved I will donate 10€, maybe more if I can afford it (I know it's not much but I'm kinda living below minimum wage as a student)