>>3777640
>He probably only has the built in songs and can't play downloaded mp3s at all
Or you could make it possible to download it, but the owner didn't know how and never did. The player considers its library vast (or if we're going with cheesy spook, "an unending parade of horrors") but only plays the same two songs over and over and never picks up on the oddity of this.

Tangential but you could parody something like the iDog as a Darkner if we're going the route of music-adjacent toys with lights. Probably can't fit it into the spooky light show boss, just a separate idea