Silvia Benvenuti helped with the HTML, CSS and all the pretty graphics.
Happyworm is a small web agency that focuses on innovation.
jPlayer was first released as a beta in May 2009 after 6 months of development. By August 2009, jPlayer had evolved from its original 'hidden Flash' roots to create one of the first, if not the first, HTML5 audio players with a flash fallback.
We let the beta simmer a while. jPlayer worked as a plugin, but it was not particularly well written, with many methods dangling on the jQuery object. We incorporated key parts of the jQuery UI core into jPlayer to solve this. Along with a bunch of other tweaks here and there, we released the first official version in February 2010.
We continued to develop jPlayer, fixing the bugs along the way. We reviewed the accessibility of the HTML used in our demos, since we noticed that a large number of users were copying them directly and adding their own tracks. We then proposed a standard way of structuring the HTML with the hope that people would create skins and sumbit them, but that never really kicked off. The final version of jPlayer the jQuery audio player plugin was released in July 2010 and appears to have served many people very well since then.