I think you will have to put the mplayer plugins to your new firefox directory...I work on fedora and on fedora following thing holds. I guess it would hold on your distro as well
by default the mplayerplug-in files are installed in /usr/lib/mozilla/plugins. Normally Firefox looks in /usr/lib/mozilla/plugins for its plugins by default. If you have trouble with the mplayerplug-in in Firefox log in as root and do a "cd /usr/lib/mozilla/plugins", hit enter, then do a "cp mplayerplug-in* /usr/lib/firefox-1.0.7/plugins" and hit enter. This will copy the appropriate mplayerplug-in files into your current Firefox installation's plugin directory. If your current Firefox installation directory is not /usr/lib/firefox-1.0.7 substitute the correct directory name in the above command.) In order to keep yum from overwriting this special version of mplayerplug-in after you install it you should do a "yum --exclude mplayerplug-in update" when you do your updates with yum. (Or for a permanent fix add the line "exclude=mplayerplug-in" to your /etc/yum.conf file. Be sure there is a new line/carriage return at the end of the file.) You could go to
http://www.apple.com/trailers/ to test your MPlayer
(from
http://stanton-finley.net/fedora_cor...ion_notes.html)