UPnP/DLNA home media server for GNOMEhttp://live.gnome.org/Rygel
Rygel is a home media server that allows sharing audio, video,
pictures, and control of media player on your home network. In
technical terms, it is both a UPnP AV MediaServer and MediaRenderer
implemented through a plug-in mechanism. It conforms to DLNA and does
on-the-fly conversion of media to format that client devices are
capable of handling.