Missed your post, somehow -Sorry :|
First off, Welcome to the Forum patrickpmm !
Here are all important links:
http://lmms.io/forum/viewtopic.php?f=1&t=4740
-A few rules and useful forum instructions
That is a feature in transporthow to use the "after stop go back to begin" button.
When you have chosen that state of transport, LMMS will move the playhead to Bar-0 OR to the 0-bar in a loop-selction, when you either mouse-press the stop button, or you press space, during playback.
The other two options will:
* return playhead to where it was startet
* Stop playhead where it is in playback