ok, i got it all wrong..
the standalone plugin in link above is very old and was experimental; their new plugin requires vlc to be installed with all its codes, that's why the standalone was almost 4mb and the new one is 200kb because it needs vlc files
so you will need to download vlc and install it and when it prommpts to use the mozilla plugiin, click yes
you can also test it there:
enate_proceeding_03-26-10/0:00:35/0:02:20&tl=1" rel="nofollow" >http://metavid.org/w/index.php?title=Stream
link above will use vlc in km 1.5 but in 1.6, gecko 1.9 will use integrated theora player