This is a utility for sorting files by kind or by extension.
nsort [options] [path]-t [dir]
Set the target directory.
-by-kind
Sort by kind.
-upd [ext]:[kind]
Update a mapping.
Example: nsort -upd mp3:Audio
-del [ext]:[kind]
Delete a mapping.
Example: nsort -del mp3:Audio
-map [ext]:[kind]
Add a mapping.
Example: nsort -map mp4:Video