Click "See Inside" and drag these to your bag. You don't need to give credit to anyone, these belong to Scratch. When Scratch was updated to 3.0, these were the sounds that got left behind. There's only three of them.
2.0 Sprites: https://scratch.mit.edu/projects/780263135/ 2.0 Backgrounds: https://scratch.mit.edu/projects/780272362/ 2.0 Sounds: https://scratch.mit.edu/projects/780292722/ 1.0 Sprites: https://scratch.mit.edu/projects/780321707/ 1.0 Backgrounds: https://scratch.mit.edu/projects/780523910/
