A sting is music that allows a speaker / award winner to make their way to stage without the awkward silence while they make their way between chairs. Its usually dropped in at the most recognised part of the song.
QLab is a great way to play back audio stings, with inbuilt editing and a stable and reliable playback system. It’s free to use the basic version. Which would be more than enough for playing back stings.
Dan Bamber Audio 