Jay Salvat has produced some amazing jQuery plugins before and his latest library continues in that tradtion. Buzz is his newest creation and makes it incredibly easy to use the new HTML5 Audio element's API. It offers methods to track things like:
And support for a variety of audio formats:
It also provides methods to help you degrade your application for non-modern browsers. It's a simple, clean and easy-to-use library and definitely worth a look.