Hi Free,
Well, a possible definition of the group could be the list of the Alioth's project members http://alioth.debian.org/projects/demudi
Do you think it would be possible to ask Nicola Bernardini to redirect demudi.org to this alioth page? The Plone site created by the Agnula project which is currently visible via that domain name hasn't had any news posted for nearly two years now.
By the way, http://demudi.alioth.debian.org/ links back automatically to the hijacked demudi.agnula.org site, which sometimes has dodgy links on it.
demudi.alioth.debian.org is listed as the project homepage on alioth.debian.org/projects/demudi - so there's a bad loop there. It gives the false impression that nothing's going on with Debian multimedia these days.
Perhaps the alioth page could list all the active, Debian-derived multimedia projects. There are some projects under http://alioth.debian.org/softwaremap/trove_list.php?form_cat=99 which could probably be cross-linked. Also, http://alioth.debian.org/mail/?group_id=30525 doesn't show the debian-multimedia@lists.debian.org list.
And finally, on http://alioth.debian.org/projects/demudi it says 'Development Status: 3 - Alpha' which I don't think is a fair reflection of the stability of the software in 2007.
Cheers! Daniel