the sorting algorithm has not changed in a very long time and likely will not change. best advice is to use a program like MP3 tag and make sure all the ID3 tags are filled out correctly in the files and use the music option in the menu to view them.
using files will be sorted alphabetically but any new added files will be sorted at the bottom of the list. as they are new additions to the FAT. If you want the files option sorted alphabetically you would have to load all files again each time anything new is added.
