SetSoundVolume 1.5.3 - All information for changing preferences is included with the control panel. Simply open the SetSoundVolume control panel, and hit the About/Help button. There are six check box buttons in the control panel. To change which keys activate changing the sound volume, check/uncheck the Command, Control, Option, and Shift Keys. If the Use Pop-Up Menu check box is checked, then your combination of keys (whatever modifier key buttons are checked, i.e. Command, Control, Option, Shift) and a mouse click will pop up a menu showing the current sound volume, and allowing you to change the sound volume.