Workaround for sound issue for small .ogg files; added (mostly)
inaudible noise to end of yumCollect.ogg to allow it to load and test.
Modified sound player to properly stop current sound and replay if asked
again (to produce repeated effect if grabbing multiple yums)

Found bug where hitting the ceiling when the floor is two units down
(directly below bonzo, basically a ceiling, 2 tiles of space, and a
jump-through block type he jumps through) causes bonzo to float through
the ceiling.