I am pleased to announce that gupnp-media-server project has been moved to GNOME SVN under the new name, Rygel. Currently it's a basic implementation on top of GUPnP and Tracker but I'll be putting a lot of time and love staring from next week to turn it into a very great project. Special emphases will be put into making it fit the UPnP needs of GNOME.
This would be a very good time to convince me to implement all the features you would want to see in a UPnP Media Server so I can add them to my TODO file. :)
UPDATE: While updating the jhbuild moduleset, I found out that rygel isn't buildable with latest vala/bindings. I'll try to correct the issue(s) tommorrow so don't panic if it doesn't build for you. It's just the demo effect. :)