Thinking about it, I guess the only way is to filter out the double entries. I'll post tonight a version for 2.1.3if you also get double episode numbers?
I forgot to add, that in this dialog I only display "fixed" and removable drivers. I'm not using any resource path accessors from MP2 nor network locations.
Expanding the directory tree resizes the dialog and it looks not very nice. If someone (maybe ge2301 ) wants to make it prettier I'm open to any suggestions I already can provide the number of collected episodes/movies and number of watched episodes/movies.