\o/
Glad you've got it up and running! Mine is now a key fixture in my tellybocks setup. It pulls content from an old laptop HDD hooked up to my router, and I control it with my Harmony remote via HDMI-CEC on my Samsung TV. Completely seamless. I also use it for iPlayer, as it seems to be much more reliable (and pulls in a higher quality stream) than the client built in to my FreeSat box. Pretty awesome for a £25 circuit board.
My next step is probably the same as yours: to spend a bit of money on a proper NAS. I'm looking at getting a 2-bay Synology unit and using it as a media store, Time Machine backup target and torrenting box.