Adds HTML5 audio support

Fixes #2 because hey I have enough friends anyway.
@iaincollins Sounds good to me mate, I'm going to close these issues off now, but if you decide to re-work it, let me know, and we'll start a little list in the readme.

I'm still working on that little chrome plugin too (deleted the old comment, to keep it on the down low), so keep an eye out :wink: