Audio Embed

Upload audio to youtube (blank video so as to speed up the transfer). Use iframe with width, height and frameborder set to zero. Probably best not to use this for non-essential things as it has to be autoplay.

<iframe src="https://www.youtube.com/embed/_iUj6iOiXF0?autoplay=1" width="0" height="0" frameborder="0" allowfullscreen="allowfullscreen"></iframe></div>