ABMAudioPlayer does not have this feature. Note that a HTML5 player in a webbrowser is allowed very little nowadays (because malicious websites overused this feature by playing automatically all kind of audio when a user entered a page). Because of that, many browsers do not allow you to play, stop or pauze audio any more by code. The user must do a real interaction, like clicking a button to start playing audio.
But as I said, enter a wish in the feedback app and I have a look what I can come up with.