But when I go to plug-ins all I can see is a UPnP and media server log view. No configuration option at all.
I tried to uninstall it, but its still there (but with an older version number).
UPnP Media Server
As of 18.104.22.168, Azureus comes included with the UPnP Media Server plugin. By default no files will be made available via its service. However, "Azureus" may start showing up on your devices that access UPnP Media Servers.
Downloaded files can be streamed to players (both local and remote) by using the "Media Server" context menu options available in the MyTorrents view and specific download's Files view.
If publishing of content is enabled this allows UPnP Media Server players to browse and stream downloads managed by Azureus.