This JavaScript targets to play short media files, e.g. mp3 files, in web browser with simple graphics(controls). Currently it can play mp3 by QuickTime Player or Window Media Player in IE6 and Firefox 1.5 on windows for sure. I only use Firefox and IE
Developer: livibetter Platform: windows Date upd:2006-10-05 Hits6016 [Download] [Visit]

This script plays a sound when the mouse moves over certain links. It can be configured to initiate the sound only when someone clicks on the links as well.
Developer: javascriptkit.com Platform: All Date upd:2003-12-18 Hits6019 [Visit]

Media Machine is a multi-purpose audio/video player written entirely in javascript that supports a number of file formats and comes equipped with features such as a playlist, music library, search, graphic equalizer and more.
Developer: spriteworks.com Platform: Date upd:2004-07-06 Hits12222 [Download] [Visit]

Embed Background music in your page. Control setup and options for both Netscape and Internet Explorer.
Developer: ricocheting.com Platform: Date upd:2000-10-05 Hits18971 [Visit]

Add a sound effect to your webpage for certain actions, such as when the user moves his mouse over a link, with this script. ThisIE-only script is simple yet versatile, allowing you to instantly apply the sound to multiple items on the page. Relies
Developer: Dynamic Drive Platform: linux, windows Date upd:2005-03-23 Hits3521 [Visit]