OpenGameArt.org
Learning with computers
Credit line
"Learning with computers" by Mega Pixel Music Lab licensed CC-BY 3.0: https://opengameart.org/content/learning-with-computers Author's attribution notice: Attribute this to megaPixelMusic. And it would be great if you linked to my soundcloud page also. https://soundcloud.com/megapixelmusic
Where to put it: Game credits or video description. If the entry has a "Copyright/Attribution Notice", follow that.