Who knows audio software that recognizes pitch and volume to be used as a Mouse-Replacement?
Pitch for Y- and volume for X- coordinates of the mouse-cursor.
No more headache on KeyboardMode versus MouseMode.
See also Wiki:DontModeMe
JefRaskin recommends a LeapMode to largely replace MouseMode (it would technically be a subset of KeyboardMode).
When showing new things to colleagues I can often be heard saying "up, up, up, upupupupup... no, STOP! down, down, ok, leftleftleft STOP!" This is probably a safer bet than KeyAndSingMode for people like me whose tone tends to warble. ("No, not THAT button...") -- MattBehrens