There is annother problem with nb pro: autosort mp3 files only works fine when they are taged. If not, you got an mountain of files, sorted by tracknumbers which you have to sort manually. This is a work for hours or even for days. I had mentioned some years ago, to build folders for every headline of downloading files and to download the files to these folders. To rename a folder is a much less work!
P.S. This same problem is the case with lossless files, which mostly are without tags.
Peter
EDit: I will describe it more technically to make clear how it should work. Every headline of a posting in the newsnet consists on two parts: the headline of the posting, which the uploader gives manually for every number of different files and the filnames of this files. For the downloader the headlines also consists on two parts, one wich is equal for every file (the headline, the uploader gave this posting together with groupname and name of the album if this was part of the filenames) and one part wich is different (the tracknumbers and the titles of the tracks). So what nb has to do is to check two headlines (not more to save CPU power) of every download, a user selected and to build a folder, name it after the equal part of the headline and to put all downloaded files of this headline in this folder.
Peter