Comment 15 for bug 38584

The JavaScript which displays the movie in this case looks for a plugin called "Windows Media", and if it doesn't find it, presents the dialog you saw.
While Totem provides one plugin instance, called "Totem Mozilla Plugin", mplayer provides a few, one of which is called "Windows Media Player Plugin".

If you think that Totem should also pretend to be called "Windows Media Player" for the sake of broken websites like this, could you please open a separate wishlist bug for that? The basic feature would be that totem-firefox-plugin would name itself after various Windows plugins, for the sake of websites that look explicitly for such names in the list of plugins. (it is going quite far in search of full compatibility, and I wouldn't be sure that upstream would consider fixing it).

I was unable to reproduce the crash. If you can reproduce it, could you please try to obtain a backtrace by following the instructions on http://wiki.ubuntu.com/DebuggingProgramCrash.
This will greatly aid us in tracking down your problem.
To run firefox under a debugger, run "firefox -g" from the command line.
Since it would confuse this bug to add the crash information to it (one bug should be about one thing), could you add any information you find to a new bug entry?

If this is okay with you, I'll reclose this bug tomorrow - the particular bug described when the bug was opened, was fixed.
Thanks.