I was caught off guard while playing an old nostalgic game, that the ImgBurn completion sound is in fact in this game! The game is Freddi Fish 2: The Case of the Haunted Schoolhouse
I was frantically looking around for the ImgBurn window when I realised it was actually the game!
I uploaded a screen recording of the event: https://youtu.be/kSpB8Cybj2A
I thought this was very interesting as it seems no one really knows the origin of the sound, maybe it was Freddi Fish? This game was released 1996 I think. So maybe a company making sound assets from around that era?