My old TV was a 2011 LG whith medialink (PLEX) it's a shame that in 2014s models like my 49LB87 you can´t use it.
But yes, it is possible to see the folders in your PMS in a 2014 TV. Don't use smartshare app directly, you got to go to "Device Connector" and then "PC" ... then smartshare connects to your computer, but now it's able to see the folders... (excuse me for my english!)