http://freesound.org/people/Vartan/sounds/30298/
nope he didn't make them himself that's not a possibility at all.
After school special comes from a spanish song about masturbating, but I cant remember the name or a link to it
uhhhh where in blockland might this be????
default track added in that one halloween update (Vartan_-_Death.ogg i think it's called)
pretty sure most of the sound assets in blockland are royalty-free
it's definitely that after school special is a just royalty free song so it's unsurprising that you might find it elsewhere