I’m trying to achieve this behavior:
Spacebar: Start/Stop with return to start location on Stop (current behavior)
Ctrl+Spacebar: Start/Stop WITHOUT return to start location.
I’ve searched through the key commands but there seems to be no such ability. 
Prock
2
I use buttons on the numpad…
0 - Stops it
. - Returns to beginning
Enter - starts it
Regards. 
I use ‘alt spacebar’ for return to start.
peakae
4
Keypad 0 stop
Keypad 0 (again) return
Keypad enter play
Many ways to skin a cat.