I must be missing something obvious... but can't you use Orb? I have my home PC setup running Orb server and I can browse pictures and movies (which I selected to be shared) on my PC via N800 either using File Manager or Web browser... The PC does the video transcoding on the fly... This does work too over the internet, as long as router and firewall settings are correct.

I know you mentioned these RSS-feeds... which is likely the obvious thing I'm missing...