web page sounds

I have the web page configured so there is a sound when an alert is triggered.  This has worked fine in I.E. for years.

The sound does not work with Firefox or Edge.

This is the code I have. Has anyone seen this and know how to get the sounds to work in other web browsers other than I.E.

<audio autoplay id="bgsound">
<source src="&XYMONSKIN/../sounds/&XYMWEBBACKGROUND.wav"
         type="audio/wav">
</audio>