Man. Two weeks. Hopefully now, I can get other projects over with.
Sources I forgot to mention:
Sounds of Science - SpongeBob SquarePants Production Music (used in third segment)
asdfmovie6 (the airplane sound from the whole 'here comes the airplane' segment)
Super Mario 64
Ed Edd 'n Eddy's subalawa sound effect
Mozart - Requiem