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Cool, but, as for your example, I didn't recognize those sounds as music and for a moment thought I couldn't play ogg after all. Try instead https://en.wikipedia.org/wiki/File:Mozart_-_Eine_kleine_Nach...

Note this has been a problem as long as Wikipedia existed though.

Doesn’t work on iOS, even though the official ogv.js demo works.

Adding on to this: iOS doesn't play mp3 for mp4 containers either. Encoding media to play on an iDevice means resorting to AAC, which doesn't have as good licensed codecs.