A fun look at the meaning of "spalten" and its family and what that has (or doesn't have) to do with splitting a bill and rewinding a song.
spalten, der Spalt, die Spalte, die Spule, vorspulen, der Splitter,
This is one of several Indo-European roots that were about the core idea of:
This one is the origin of English split, splice and flint.
The German Spule (coil) originally was a cut off round piece of wood you used to wrap your yarn around.