JS function to change links like <a href="something.wav">sound</a> so that they play when clicked

a2audio.js

/*
There are a lot of pages like:

http://titus.uni-frankfurt.de/ld/

Which have links to .wav files. It's annoying to have to change 
context, load "QuickTime", blah blah, and to lose the context
of the name of the link when you're listening to it.

The following function creates an Audio object which plays when 
the link is clicked.

*/
var a = [... document.querySelectorAll('a[href$="wav"]')].forEach(

   function(a){
       var audio = new Audio();
       audio.src = a.href;
       a.addEventListener('click', function(ev){
           ev.preventDefault();
           audio.play();
       })
   }

)