Firefox supports HTML5 Audio.

I have no idea why Superpowers Game still cannot play audio outside of Chrome.

The only way I've managed it is to use florentpoujol's dom plug-in to add/use HTML5 audio tags directly. You know that should not be a requirement for cross-browser basic functionality necessary to any serious videogame.

I don't even know what's wrong. Is it because the Sound asset itself gets an extension of .dat despite being an appropriate Ogg Vorbis sound file and therefore it gets sent with incorrect metadata that makes Firefox ignore it? Would that make it a problem with the HTML5 Exporter?