Have you tried to play a Windows Media stream in Firefox and got the message 'Firefox needs need WMP 11 Plugin'? Click on that and Firefox tries to install the plugin but fails to find a suitable plugin and suggests a manual install.

Windows Media Player is a highly popular free media player with advanced capabilities that ensures a smooth experience when searching, playing or taking digital media content on Windows based computers and portable devices. Windows Media Player allows you to quickly access the most common functions such as ripping, burning and synchronizing. Click the Install button to automatically download and install the Windows Media Player Firefox Plugin. Depending on your security settings, you may see a Security Warning dialog box.

You might think that upgrading to Windows Media Player 11 could solve the problem. You upgrade to Windows Media Player 11 but the problem still persists.
Well the problem is due to the absence of Firefox plugin for Windows Media Player 11. Fortunately some good guys have been developing it for free.
You can get it HERE
Run the exe to install it. Voila!! you can now view streaming Windows Media in Firefox.

File Details
File Size	0.3 MB
License	Freeware
Operating System	Windows Vista/XP
Date Added	April 13, 2007
Total Downloads	34,694
Publisher	Microsoft Corp.
Homepage	Microsoft Windows Media Player Firefox Plugin

Publisher's Description

Microsoft Windows Media Player Firefox Plugin allows you to use Windows Media Player inside of Firefox. It is backwards compatible with the old 6.4 Windows Media Player. And among other things has the following new featues: Robust design that addresses all of the known issues with the old plug-in; Windows Media Player will now work with Firefox on Windows Vista; and Support for the Windows Media Player OCX scripting interfaces.

Sven123456789 reviewed v1.0.0.8 on Apr 18, 2007

It worked though it still stop'd once with an error, but allowed me to watch a video after that. I tried a video on cnn.com and it worked ok. I was hoping it would also fix the problem in Seamonkey, it didnt, so this fix is just for Firefox. Shame, i use Seamonkey the most of all the browsers. Microsoft is such a pain with its software. Just make it easier for the public to use software like WMP. Its not like they are charging people to get wmp.

Zoroaster reviewed v1.0.0.8 on Apr 18, 2007

1- What I don't understand is - otherwise than on Vista (I'm on XP SP2) - the necessity and the difference between this new 'Windows Media Player Firefox Plugin 1.0.0.8' and the plug-in which is already installed (that is if WMP was installed before Firefox), npdsplay.dll ?
2- 'Windows Media Player Firefox Plugin 1.0.0.8' installs in fact np-mswmp.dll in the Firefox plug-in directory. Is np-mswmp.dll to be used with npdsplay.dll or should I remove the latter?
I've been searching everywhere for these answers, if you have them, thanks for letting me know because, frankly, I don't get it! => Thanks :)

F1Racer reviewed v1.0.0.8 on Apr 18, 2007

Finally !!
I always used to get bad and stuttery video on cnn.com (even though the audio remained fine).
Now with this plugin, its perfect and I watched 3 vids on CNN and not a single glitch.
Brilliant. 5 stars, because it does what it says on the tin.

Windows Media Player 11 Firefox Plugin Download 64-bit

PC_Tool reviewed v1.0.0.8 on Apr 17, 2007

Administraighter
Install WMP11, make sure you have the latest version of FF. It works perfectly. Perhaps, and this is just a guess, there is some other extension, plug-in or 3rd party application on your system that is causing the problems you have described.
The KB you linked to is ancient and no longer an issue.
The extension you linked to does not display the content within the page itself but loads it into a 3rd party application window which totally defeats the purpose. It's the same as downloading it or streaming it to your media player. The point of this plug-in is that the content is displayed within the page, as intended by the page designer.
If you have specific proxy settings in your browser, you will need to map these same settings through the IE proxy settings. This plugin will not read any proxy settings cached in the Firefox browser.
This is not a deficiency of the plug-in. WMP uses the same proxy info that IE does. Always has, likely always will. They'd have to patch WMP to get it to look for proxy info elsewhere.

terminalx reviewed v1.0.0.8 on Apr 17, 2007

Some people should not be allowed to review...like admin...that bulletin should you actually read it points to a bulletin over a year ago had you actually read it
the update does what its supposed to and everything works fine.

Zenithian reviewed v1.0.0.8 on Apr 17, 2007

This plugin is absolutely top-notch! WMP media finally displays correctly in Firefox, as it functions far better than the workaround found in the Mozillazine KB. If you use Firefox and want to view WMP content, this is a must-download!

Administraighter reviewed v1.0.0.8 on Apr 17, 2007

It's Microsoft--there's always a down side. Take this, for example:
Vulnerability in Windows Media Player Plug-in with Non-Microsoft Internet Browsers Could Allow Remote Code Execution (911564)
http://www.microsoft.com.../Bulletin/MS06-006.mspx
To the people who didn't get my point: I know this is an old security bulletin. I did not say that it applied to the current version of the plugin or to WMP itself. My point is that the same thing could easily happen again. This is, after all, Microsoft, and another reviewer pondered whether there was any 'down side'. My opinion was that 'Yeah, there could be a security down side.' Get it?
Also, from the release notes installed along with this plugin:
If you have specific proxy settings in your browser, you will need to map these same settings through the IE proxy settings. This plugin will not read any proxy settings cached in the Firefox browser.
Sorry, but this is 'a deficiency in the plugin'. I don't care what they'd have to change to use Firefox's proxy settings; the point is that the plugin doesn't use them. It makes no sense to claim that 'It's always been that way, and it would be hard to change' is a defense for something that works poorly.

capandjudy reviewed v1.0.0.8 on Apr 17, 2007

Holy cow!! It works. I hope that there is no downside.

Windows Media Player Plugin Firefox

Your Rating

Sven123456789 reviewed v1.0.0.8 on Apr 18, 2007

Zoroaster reviewed v1.0.0.8 on Apr 18, 2007

F1Racer reviewed v1.0.0.8 on Apr 18, 2007

PC_Tool reviewed v1.0.0.8 on Apr 17, 2007

Administraighter
Install WMP11, make sure you have the latest version of FF. It works perfectly. Perhaps, and this is just a guess,

File Details

Publisher's Description

Sven123456789 reviewed v1.0.0.8 on Apr 18, 2007

Zoroaster reviewed v1.0.0.8 on Apr 18, 2007

F1Racer reviewed v1.0.0.8 on Apr 18, 2007

Windows Media Player 11 Firefox Plugin Download 64-bit

PC_Tool reviewed v1.0.0.8 on Apr 17, 2007

terminalx reviewed v1.0.0.8 on Apr 17, 2007

Zenithian reviewed v1.0.0.8 on Apr 17, 2007

Administraighter reviewed v1.0.0.8 on Apr 17, 2007

capandjudy reviewed v1.0.0.8 on Apr 17, 2007

Windows Media Player Plugin Firefox

Sven123456789 reviewed v1.0.0.8 on Apr 18, 2007

Zoroaster reviewed v1.0.0.8 on Apr 18, 2007

F1Racer reviewed v1.0.0.8 on Apr 18, 2007

PC_Tool reviewed v1.0.0.8 on Apr 17, 2007