mengoshmink, I just wanted to let you know I finished the script that allows me to host my media from an NFS server while allowing my WD TV Live to have it's library, write meta data/cover art to the directory without giving the TV Live write access to my movie files.

Here's the current test environment I have set up on my system.

cat /etc/exports
/home/garrett/VideoTest/Videos1 *(rw,async)

Video Directories and permissions
drwxrwxrwx 4 garrett garrett 4096 Jun 1 14:50 Videos1 # WD TV Live writeable, houses hard links to files
drwxr-xr-x 2 garrett garrett 4096 Apr 8 14:53 Videos2 # secure, houses movie files

Movie file in writeable directory(Videos1)
-rw-r--r-- 3 garrett garrett 1775807500 Jan 16 2014 Star Wars Episode 2.mkv

Movie file in secure RO movie directory(Videos2)
-rw-r--r-- 3 garrett garrett 1775807500 Jan 16 2014 Star Wars Episode 2.mkv

script
#!/bin/bash

SOURCEPATH="/home/garrett/VideoTest/Videos2/"
TARGETPATH="/home/garrett/VideoTest/Videos1/"

cd ${SOURCEPATH}
ls *mkv | while read LSRESULTS
do
cd ${TARGETPATH}
if [ ! -a "${LSRESULTS}" ]; then
ln "${SOURCEPATH}${LSRESULTS}" "${TARGETPATH}${LSRESULTS}"
fi
done

#END#