input: [Option] -x [Explanation] 
output: Tags in 256 subdirectories. The tag backup files will be placed in subdirectories named 00,01, ... up to ff, (256 in all). This has the following advantages: (1) It overcomes a limitation in the FAT32 file system of 16384 files per directory, so if you have more than that number of mp3 files and you are using FAT32 you will have to use the -x option. (2) It makes it easier for Windows Explorer - If you click on a directory with 16000 files in it, Windows explorer can hang for a minute or so while it retrieves the information. If you use the -x option when creating a backup, you must use it when restoring tags and also when updating the backup. I recommend using the -x option even if you are using a file system that handles such large directories, beacuse the smaller directories are more manageable.