I know that HTML5 allows audio embedding and control like so:
<audio controls
src="http://media.w3.org/2010/07/bunny/04-Death_Becomes_Fur.mp3">
Your user agent does not support the HTML5 Audio element.
</audio>
but how can i set the volume initially? And for extra credit-how can i change the tune as the user scrolls past a certain or ?