Thank you!
Re my second question
As on the screenshot, in Reorganise Librart Files menu, I set:
-move music
-on drive C:\
-to folder C:\MyMusicLibrary (that's where my MB library is located)
For example, if i change Album tag within MB, it implies that the folder location of the music file has to be changed as well.
I created this rule for this particular scenario, but do I really need it?