Hey Groovey,
That's cool man! Please leave a link to your channel so we could check it out!
About the copyright, it's all free stuff. My only concern would be with the main level music theme, which is free but has its own copyrights rules. Please check this out https://creativecommons.org/licenses/by-sa/4.0/ and the creator's page as well http://freemusicarchive.org/music/Ian_Sutherland/The_Jungle/Voids_Voice.
All the other sounds either we created or came from free websites!
Cheers!