Als ik streams af wil spelen in wmp 11 in firefox 2.2 onder vista krijg ik het volgende in beeld, in een apart venster: npdsplay, can not create DirectShowPlayer. Dus het beeld van de stream opent wel, maar er komt geen beeld.
Nu heb ik al het volgende gedaan:
Windows Media Player in Firefox on Vista

One annoying thing about Vista has been that whenever I visit a web page that wants to display a movie via Windows Media Player, I get an error message in Mozilla Firefox stating that the proper plugin is not installed. Clicking the link to install the plugin brings me to an XP plugin page (which is not compatible with Vista), but nowhere on Microsoft's web site could I find web browser plugins for Vista's version of WMP.

Not anymore.

The solution involves copying a few dll files into both your Windows Media Player and Mozilla Firefox program files directories.

1. Download the files npwmsdrm.dll (http://www.dlldump.com/download-dll-files_new.php/dllfiles/N/npwmsdrm.dll/9.00.00.3250/), npdrmv2.dll (http://www.dlldump.com/download-dll-files_new.php/dllfiles/N/npdrmv2.dll/9.00.00.32508/) and npdsplay.dll (http://www.dlldump.com/download-dll-files_new.php/dllfiles/N/npdsplay.dll/3.0.2.629/). (Links here are to dlldump.com - they had the proper versions of the files to adhere to yet another Microsoft security bug. Make sure your npdsplay.dll is version 3.0.2.629).

2. Copy those 3 files to two places:

The Media Player directory, usually C:\Program Files\Windows Media Player
The Firefox plugins directory, usually C:\Program Files\Mozilla Firefox\plugins3. Restart Firefox and see if it's working. (Here's a page with a video: Pink Floyd - Comfortably Numb (http://members.aol.com/jrzycrim01/mozilla/wmp/vidtest-HS.html)).

Maar ook dit werkt niet, wie kan mij helpen??