ATF code for indicating a file being in a specific folder

[Wineroz]

I had no intention except to meet the requirements that were indicated by your previous questions and examples.
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It seemed you were interested in files that were in M:\ or M:\M. Therefore, M could be the drive letter and/or the name of a folder.
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If all your files are always on drive M, then the code that deals with "CorrectDrive" is probably unnecessary.

I will leave it

Because rarely I also play files from drives other than M. And so with that neat code my triangle appears exactly when I want it: which is when file is somewhere within folder M on drive M. And if a file is in folder M [even in sub-folder M] but on drive D, then the triangle does not appear. So that goes beyond my previous expectations

So thank you very much, you have made what I call a 120% job