YAFS (Yet Another FAT Sorter) is a portable command-line utility for sorting FAT16 or FAT 32 files and folders.

It operates directly on a FAT file system structure, changing its entries' order. You can specify a file with an arbitrary order as an input to the program, and it sorts FAT file system entries according to the order provided.

YAFS (Yet Another FAT Sorter)is helpful for sound systems (i.e., Mp3 Players, Mp4 Players, and car sound systems), digital photo albums, and DVD players that read a FAT file system and do not provide a mechanism to change the playlist order.