revamped audio manager
one source per file, since i've now rtfm
pause not stop
fixed offset calculations
added longer song to example
use addEventListener
some actual ui
user-select
can actually play an audio file
progress/time working
eliminated copypasted code
updated metadata lib
added metadata to example files
detecting end of track
hooked up prev/next
more robust example
manually update the clock
support for seeking
volume support
removed unused less files