I have just recently set up a DLNA server on my GNU/Linux desktop at home. I am using PS3 Media Server to do the job. I like it a lot so far, but I was curious about whether or not it is the best solution. To you, what is the best DLNA server for Linux?
I found Mediatomb to work with very little configuration. I now have replaced it with a Netgear ReadyNAS box. It is a bit pricey, but also very elegent. Iirc it is running a custom DLNA server, easily configurable through the FrontView web ui.
FWIW - I use mediatomb and find it to work flawlessly, although it sure took some configuring...
It runs as a system service (started from /etc/init.d on boot) and I've set it to auto-update indexes so I never need to touch it now.
I also set up a little IMDB lookup script that moves movies into directories based on their IMDB rating...
This post gives a pretty good breakdown of a lot of choices.
I use mediatomb. See this post for a bunch of great uses.