There's no support for that. I think DLNA servers and Samsung's own software serves up content. NAS support is something I add with a WDTV or Roku box.
I recently bought a 40" S6300 smart TV and was able to connect it to the network and detects my laptop but when I access the video files, it shows the old deleted files and doesn't show the current ones.
I have tried:
-emptying my laptops recycle bin while connected to the network and not connected
-did ad disk clean up on my laptop
-did a search for the files, they are no longer there
-tuned the TV off, unplugged it, plugged it back in
-rebooted my laptop several times
-did a factory reset on the TV
None of them worked, it's still showing old deleted files and none of the new ones. They wont play either because obviously they are no longer really there.