Those sounds almost certainly came from a pack then. I'm hearing other sounds being used in various contexts too. I've heard the "ka-ching" and screaming sounds of RollerCoaster Tycoon being used in multiple movies and cartoons.

And there is this dolphin sound that everyone uses: various movies, some episodes of cartoons (at least Fairly Odd Parents, SpongeBob SquarePants, and Rocket Power have used it), in Plants vs Zombies, etc. etc. etc. Somehow all dolphins on screens make the exact same sound. Coincidence?