Access back-up of Pictures folder on network drive
As it turns out, trying to set the permissions  via the command line does not work on NAS drives, as pointed out in the response to this question.    The mystery user ("daapd") that has ownership of the Pictures on the WD My Book LIve (MBL) is the name of the streaming service that streams the pictures, video, and  music on some shares of the MBL -- and this "user" appears to have exclusive read &amp; write access to directories containing music, pictures and video on shares that are set to allow streaming.   

I came across a solution stating "Just copy the contents to a windows computer" which works because the extended unix permissions do not prevent windows machines from accessing the data.  

MY SOLUTION:

Since the extended *nix permissions prevent any user not named "daapd" to access those files, I created a user on my Mac named "daapd" and voilà, I could accsss the Pictures folder.  I then created a new share on my MBL with streaming disabled, and I copied the contents from the old share to the new share and I now have access to my data.