This used to work up until recently. Now, no matter which english (US) male voice I choose, it only plays the same robotic female voice.

This addon does not support custom sound files.

I actually like this add on, but it just updated, and now the download sound does not work. the speech and notification work, but the sound is gone, despite an uninstall and reinstall of it, and a computer reboot. it
was working before Today's update ! Options page did not help either.

And as usual, with anything Firefox, i can't seem to find an appropriate link to report it w/o having to go thru some oddball sign up. So, here we are !

using firefox v58 i get no sound when using sound option but speech works. i just want a lil dink sound.
edit: the closest i get to a custom sound is; chose sound, speech output just the letter D, and voice hazel.

I am having to revert back to the older version. Each time I update to the new version, it works once. And, then never works again. This only began with the latest release. Never had an issue before.