This is awesome. I'd also love to see a Ogg Vorbis decoder - the Web Audio API is coming to Safari (both Mac and iOS), and it only plays the patent-encumbered AAC normally, without support for Vorbis. So that would fix Safari leaving only IE without support. Also, it might pressure browser makers to add native support for Vorbis - if their browser plays the files anyway, just slower than other browsers, why not move support in to the browser?