Hi Marcus, Could you please add support for firefox in mplayer-plugin? I had to do the following to get it to work. Symlink /usr/X11R6/lib/firefox/lib/pkgconfig/mozilla-plugin.pc to /usr/X11R6/libdata/pkgconfig/mozilla-plugin.pc export PKG_CONFIG_PATH=/usr/X11R6/lib/firefox/lib/pkgconfig make install. Thanks Gautam