These are the Audio settings in the game Divinity: Original Sin:
FX
This volume bar represents the sound effects in the game- the sounds that characters, items, and monsters make.
Music
This volume bar represents the music of the game. Divinity: Original Sin has a truly beautiful orchestrated score, so we encourage you to keep this on
Ambient
This volume bar represents the game’s ambient sounds, i.e. the background noise of the environment that isn't made by any one specific source