Now Firefox users can use Windows Media Player within Firefox in a plugin designed by the WMP team. According to Hank Janssen, who posted the plugin on Microsoft’s open-source website, Port 25, it is “designed to support” all varieties of Windows XP and Vista. However, he also mentions that it’s backwards-compatible with WMP versions as far back as 6.4, which seems to imply that it might also work on Windows systems as old as Windows 95. That’s just speculation, though.

In any event, you can download the files from Port 25’s website. You can also find this link from the Firefox Add-ons page.