It has long bothered me that I couldn’t watch any embedded Windows Media streams in Firefox. Instead of a video I always just saw a gray box and the message: “Additional plugins are required (…)” There is a plugin alright, and I’ve installed it, too. But even after installation Firefox is still complaining that the plugin is missing. Might that be related to the fact that it dates from 2007?
Now I finally found a solution: Download the latest versions of the files
npwmsdrm.dll from dlldump.com and copy them to the Firefox plugins directory (for example
C:\Program Files\Mozilla Firefox\plugins).
These are the direct links to the latest versions:
After that restart Firefox, and the Media Player plugin should be working!