Sound.AdjustVol -10 1 decrease master volume Sound.AdjustVol 10 1 increase master volume Sound.Mute 1 master mute Sound.ToggleMute 1 master toggle mute Sound.UnMute 1 master unmute Sound.PartialMute 60 1 partial Mute Sound.PartialUnMute 1 partial Unmute Sound.SetVol {1} 1 set master volume 0,10,20,30,40,50,60,70,80,90,100