It may be an unwanted post, but I recently got this information while sufing through.. It is nothing but a javascript file from Yahoo. It is duty is to convery every mp3 link inside an html page into mp3 player and it also creates a playlist according the the mp3 links available.

What you have to do, is just add this js file below your html page which contains some mp3 href

<script type="text/javascript" src="">script>

You can see the demo here,if your browser supports flash

Take view source to see how does it work