Generated file won't play in Firefox

I’m running Windows 7 Pro (64-bit) SP1 on one machine, and Windows 10 Home on another machine.

I recently downloaded Audacity 2.1.0 on the Windows 7 machine.

The first thing I did was to generate a Click Track, select a single click from the track, and export that selection to a new file named buttonClick.wav.

I then inserted the text “buttonClick.wav” into an HTML5

It played perfectly in version 41.16299.371.0 of Edge, in version 67.0.3396.99 (64-bit) of Google Chrome, in version 54.0.2952.64 of Opera, and in version (32-bit) of Slimjet.

But, it would not play at all in version 61.0.1 (64-bit) of Mozilla Firefox; neither here at home on the Windows 7 machine, nor on the Windows 10 machine, nor on a computer at our local library.

I then substituted a different .wav file (from my collection - I didn’t make it with Audacity) and it worked fine in Firefox.

I’ve checked on the Mozilla support forum, and on StackOverflow, but haven’t been able to figure out why this might be happening.

Do you have any thoughts on why the .wav file doesn’t work in Firefox, but does work in the other browsers?

What format? “16-bit Microsoft PCM WAV”?

Perhaps the sound is too short for Firefox. Try a longer WAV file from Audacity (the same click with more trailing silence may work).