Wow, something that Noel didn't know
Just to clarify slightly. Normally the number of choruses for a song is set by the menu option rharv has described. The menu option I mentioned lets you override this setting for all songs as they are loaded. By default it sets the number of choruses to 5, but you can change that.
Then there is a separate "loop" tick box. This loops the whole song, intro, number of choruses, tag etc. until you tell it to stop.
You don't need this loop to be on for the first menu option to take effect, in case that is what you thought videotrack was suggesting.
Regards
Andy