OneTap Mute 1.0 - OneTap system volume control. OneTap Mute for the Newton is a small button for the backdrop application that turns the sound on and off. OneTap muting of the system volume. Quick access to system volume adjustment. Audio feedback of unmuting. NewtonID aware but not required. Easy to use. OneTap Mute is available for Newton OS 2.0 and 2.1. It has been tested on a MessagePad 2000 and MessagePad 130. No testing on a MessagePad 120 or eMate 300 has been done, but no foreseeable problems exist at this time.