@andrewilley
What specidics do you need? Samsung SoundAssistant provides volume-stepping and allows long press to change tracks.
Alterar volume incremental = volume-stepping, on by default
Controlar músicas com teclas volume = control multimedia with volume keys, off by default. The other shot is the volume key behavior. up/down/, back/forward.
Edit: It seems the Samsung app also relies on the long press. It works so well that I had to deactivate the long press inside PA. Otherwise, it will forward or back two songs for each long press.
Br.