I have done some more testing and here are my results.
Now SoT do update several movies at once using delimiter, so that problem is now solved.
SoT remember my field values in Mediainfo tab (thank you for that)
SoT do not remember my username and password, I have to type those in every time I open SoT
(In the Swag of Tools.ini file there are garbage text instead of, as it was before, my username and password written in plain text.)
I still have these duplicates when trying to import title info from the audio tracks chapter from Mediainfo and when I try more movies with information in the Audio, Title field I do get duplicates writing on several more movies.
So this is what I type in SoT:
Audio Tracks
Title
Audio
SoT then fetches all the information from the titles field in Audio as per the attached screen shots. (Duplicated.jpg and Not Duplicated.jpg)
It is this information that gets duplicated when I run SoT multiple times on several movies that I have.
From a movie that gets duplicated information, this is what is written to my MC Audio tracks field (see also attached Duplicated.jpg for comparison) :
English ; DTS-HD Master Audio ; 5.1 ; 48 kHz ; 3 432 kbps ; 24-bit (DTS Core; 5.1 ; 48 kHz ; 1509 kbps ; 24-bit); English commentary
From a movie that do not get duplicated information, this is what is written to my MC Audio tracks field(see also attached Not Duplicated.jpg for comparison) :
TrueHD Atmos 7.1; AC-3 5.1-EX; Commentary by director Andrew Niccol
(I also attach a screen shot from my Library filed to show my created Audio tracks field)
This is however not a big deal because I only run SoT once for every movie, but it is interesting that this duplication thing do not occur on every movie but only some.