Introducing my wrapper for HTML5 sound

I recognize that my PenultSound is nowhere near low level, but it serves
nicely as a high level wrapper that will ensure that games created with
my engine/framework will at least have sound on most modern non IE
browsers. Future revisions will use/wrap the webkit audio api to allow
for more granular audio control, but for my first game this should
suffice. Later on I may have to try again on this for efficiency, but
I'll cross that bridge when I get there.