Did you find this article helpful?
Spotify Premium Family, Windows X, PC
Ever since I connected a SONOS Player the volume control in the Spotify Dektop App does not represent its actual output. What you see in the picture is the "normal" output, if I move it any higher (by VERY carefully moving the mouse a VERY small distance) it becomes very loud, very quickly. This happens both while playing Spotify via the Sonos player and when just using it via the computer loudspeakers.
Is there any way to reset the volume control so I can actually move it in a normal way and get a normal reaction from the output?