JF MP3 Player is a Javascript and Flash powered MP3 player using the SoundManager2 API for Flash to Javascript communications and the MooTools Javascript framework for effects and functionality.
JF MP3 player can be used on your website to play MP3s of your choice for visitors as they browse your content. It's easily configurable for your specific needs and installs on your website in minutes.
Visit the Official JF MP3 Player website for more information.
Problem: Browsers lack good, consistent native audio/video support. (HTML 5's <audio> and <video> are on the way, but don't have majority support yet.)
Solution: Javascript API via Flash + ExternalInterface, works almost everywhere.
SoundManager 2 wraps and extends the Flash Sound API, and exposes it to Javascript.
Visit SM2 website