Sets or gets the file location of the audio file.
Setting the src property changes the audio file to
the audio found at the new src value.
Getting the src property returns the location of the
audio file.
The audio file can be either from the Media Manager or an external audio file from any web location.
The URL formats supported are:
wix:audio://v1//#duration=(http(s)|blob|data)://site.com/audio-file.mp3