Well VLC will be ported to NIT (see here)
So basicaly you could use it as a streaming server on your home network and you could use the client interface from your N800.
The smartest way would be to use the http interface through the plugin for the web browser.
There is some projects for a php VOD interface using the VLC plugin (see here if you speak french).
I successfully used this solution for years to stream movies from my private network on my professional laptop when I'm abroad, so I hope we could do the same on NIT.
There is some very alpha builds of VLC for maemo on this thread.