Playing a sound in a Firefox add-on

Question

I would like to create a simple add-on that would play a different MP3 recording every time the user double clicks a word in a webpage he is visiting and selects a special o

Answer 1

This may not entirely solve your question, as I don't BELIEVE it plays MP3s, but I'm not certain.

Firefox has nsISound, which I KNOW can play remote WAV files, as I've tested and proved it.

You may want to test it for yourself and see if it leads you a little closer!

var ios = Components.classes['@mozilla.org/network/io-service;1'].getService(Components.interfaces.nsIIOService);
var sound = ios.newURI("http://www.yoursite.com/snds/haha.wav", null, null); 
var player = Components.classes["@mozilla.org/sound;1"].createInstance(Components.interfaces.nsISound);

player.play(sound);

Good luck, I hope this at least gets you close!