If Display Leader Post-Match is selected, the lead player/team is highlighted after each match has been completed. The default setting for this option is to display.
The right side of the screen will show a preview screen of this event with a Sound button.
To customize the sound that is played when the leader is highlighted, click the drop-down menu for Sound:
Choose one of the pre-set options for sound or open the Sound Library and select one of your own.