Thanks a lot. But, Lightroom behaving the way that it does, is there a way to remove the irrelevant files once and for all? As for now, the Source/Samsung S4 will display 354 files in total, of which only 10 or so were from the last time I used the camera. What makes it even worse, is that the "Sorting by date" function seems to be of no use here.
Also: which files are the one I should copy to LR? There are three (or so) versions of each photo, in what seems to be different sizes. Is there a way to tell by the file name, size or whatever, which one I should import to my PC?
(And thanks for moving my post here, Mikestony.