2Nikster: The most easy way to add this information is to checkout 'www' subdirectory from maemo mplayer SVN, add all the necessary information to 'index.html' and submit a patch. Webpage will be updated in no time I used nvu to edit webpage, it seems to be quite convenient for this task.

By the way, did you consider trying to make some .deb package which could add opera integration for mplayer so that it would be much easier for end users?