Hmm well i went to this link : http://www.utv.bg/cat/cat_13.html
and clicked on watch link for weather channel and it took me to a page with media icon embedded... when i click the icon it loaded dbus-switchboard's 'mplayer-playlist' profile.. launching mplayer standalone and it played fine.

so my question is :
do you want your device to do the same thing or are u asking to embed moving video in webpage.

if u want embedded video u probably need (bundyo's?) plugin.

If launching standalone is fine, make sure you're running dbus-switchboard 1.1.2 and we just need to chase down which association its using.