realPlayer (Version: 184.108.40.206 – no update available)
Menu / File / Add files to library
(I will describe the problem in English because I did not get a German answer so far.)
This way most of the songs can be imported error free to the library. In several cases it happens, that clip name, interpret, album and year were not copied. Then I can see e.g. title 02, unknown, no title, 1970 in the library. The correct information is shown in a TAG-changing-software and with Windows Explorer (Windows 10) in the correct column/field. Why are the correct information not used during the import?