So If you don't watch the video here is what to do: Remix the project go inside the project and remove the animation sprites, kept the "Try out here" sprite. Pick the character you want to voice ask any questions in the questions section. Go to the sounds section in the sprite and record the voice you want the character to have. Go in the coding section switch the costume to the character you want to voice and make the recording you recorded
Any Questions ask away :)
