<!-- Replace the src with your audio file and make sure the type includes the file format after the backslash -->
<audio controls preload="auto">
<source src="YOUR-FILE-SOURCE-URL" type="audio/FILETYPE">
</audio>
<!-- EXAMPLE -->
<audio controls preload="auto">
<source src="http://yourdomain.com/wp-content/uploads/2015/01/My-Awesome-Audio-File.mp3" type="audio/mp3">
</audio>