they play it.. every 15 minutes or something...
that's when they have their "special".. limited stuff for you to
take.. first come, first served.. stuff like "Lobster Salad" or
other stuff which is not part of the buffet but "free specials"...
limited to first 10 to 20 customers 
i happened to be at the place when they presented the Lobster
Salad.. not too bad 