Unless you have an event created to play a sound when someone busts, you should be able to do exactly that as a message through the evens tab. Condition = a player busts. The action would be to display the screen for the rankings. Not too sure, as I'm not at the computer that has TD installed.... I know I have a screen that I created for the rankings, so if you have that as well, it's just a matter of knowing the modifier (the number you push to show it).