[bublor]

I have always had the most success for what I want using the 'Path contains' search item.  For instance, I have a number of drives, each drive has a 3D folder, '...C/Multimedia/3D/..', '...D/Multimedia_Two/3D/...'  ( and so on ).  This way, all items in the 3D folder on these drives will be included.  I use NFS and not samba, but I do not think that would make a difference.  My playlist would look like this( name is 3D in this instance 

Type   Movies
3D
Find items where
Path contains 3D
New rule
...


Hope this helps, the playlists I have are for UHD and 3D.  It does require you to have a little organization on storing your media for this method.  Meaning I have a 3D folder and a UHD folder on the NAS I connect with.

--john