Get file from releases page and put it to /bin/bplugins directory - execute this browser and tap on some mod - when it will be loaded - it will play in background.
You can continue your work without any issues and listen great music.
It's very simple plugin. But usefull.
To compile project all you need is sjasmplus.
I'm also using GNU Make but if you call sjasmplus for mod.asm
I've licensed project by Nihirash's Coffeeware License