How do I prevent a sprite from playing a sound weirdly?

Help with Snap! Snap! Editor
1

I am remixing this project which includes some sounds for a sprite. I am trying to make the sprite play one of the sounds when the game is over, but whenever I do so, it sounds weird. How do I fix this bug?

2

show us the project

3

we need the project

4

Here it is: https://snap.berkeley.edu/project?username=marv_theodo08&projectname=Complete%20sonic%20run

5

Error. Private or non-existent project.