Basically, you see the folder called rosa? That folder contains sounds and some other stuff for the game, you don't need to touch it yet though.

CUSTOM ASSET FOLDERS GET WIPED EVERY TIME ROBLOX STUDIO GETS UPDATED, MEANING THAT YOU WILL HAVE TO REPEAT THESE STEPS EVERY ONCE IN A WHILE

FIRST METHOD

1.Right click the Roblox Studio shortcut on your desktop and press "Open File Location"

2.You should be in AppData>Local>Roblox>Versions>the lastest version of roblox studio, Scroll up and look for a folder called "content"

3.This is where the rosa folder should be, So copy and paste it into the content folder and boom! Done!

SECOND METHOD

1.Search up "Roblox Studio" in your computer search bar

2.Right click and press "Open File Location"

3.If there is another Roblox Studio Shortcut, repeat the last step again

4.Look for a folder called content

5.Copy and paste the rosa folder into the content folder and boom! Done!