A version was created that included full customization of the Start/Stop/Play key mappings (hotkeys). Unfortunately, the extra size added to the program was unacceptable for the TinyTask concept. As a compromise, the current key combo options were chosen to avoid conflicts with other programs, while still providing some basic customization beyond a single hard-coded key mapping. This is under consideration for a future upgrade. (if a missing feature annoys you, it probably annoys us, too. Working on it.)