Hey, I noticed in your credits that you got a bunch of sounds and stuff from freesound, so I'm going to give you the benefit of the doubt that you didn't know any better, especially since I like this game so much and you don't seem to be scummy at all.
The jingle that plays when you sit on the throne is a straight-up ripoff of The Legend of Zelda: Ocarina of Time's chest opening jingle. Nintendo is notoriously strict with their copyright and I'd hate to see you get into legal trouble for selling a game with stolen music.
Cheers.