Noise fun, music not

I bought this app for my little brother who always plays on my iPod. It was one of his favorites because he liked the animal noises. Now all you hear is the music and not the animal noises and he HATES that. And theres no way to fix it or anything since theres no menu.

DeJoMe about Giraffe's Matching Zoo Deluxe - Featuring the FUN BUTTON!, v1.1.0