Joshua Parker Ruehlig, a member of the FreeNAS Forum, has released several new plugins for FreeNAS 8.2.0 and later that work in the plugin jail of a FreeNAS installation. The following Plugins can downloaded (free of charge, installation and use at your own risk):
- headphones, music download for SABnzbd
- games, video game download for SABnzbd
- lazylibrarian, eBook Downloading
- sabnzbd, Usenet automation
- sickbeard, Internet PVR for TV show
- maraschino, an XBMC frontend
Most of these plugins for FreeNAS are aimed at downloading content from newsgroups - copyright-protected material should of course not be obtained about this. In any case, you can use them to enhance the functionality of your FreeNAS installation. If you are still looking for ideas on how to build a FreeNAS system, you will find them in my Shopping list for FreeNAS on HP Proliant N36L, N40L and N54L found. I have found something similar for a High-end HTPC the luxury version compared to a Android TV box like the ATV1200who is doing her job with XBMC without any problems.
Update: for FreeNAS 9.1.x is the Plex Media Service as Plugin has been released, which brings another service besides minidlna, which can distribute media in the network.