Welcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.Close
Must Use a .wav file for Notification Sounds. Rated 5 out of 5 stars
Sure would have been nice if there was a mention somewhere that said you can only use a .wav format for a sound file for the Notification Sound feature to work. An .mp3 sound file format will not work.
Well, now you all know.