vitunes is a curses-based music player and playlist manager whose goals are a minimalistic appearance, strong vi-like bindings, and quick playlist creation/management. It does not strive to be a full-blown media player, but rather a full-blown media indexer and playlist manager. It uses MPlayer to support a wide range of media formats. It also makes use of TagLib for metadata extraction from many common formats.
Plgen (Playlist Generator) is a tool that sorts files for MP3 players in a user defined order. Cheap MP3 players often come with no playlist capabilities. In addition these players often make use of the FAT16/32 file system, leading to confusion when the playing order is not alphabetical on the device even though it is shown as alphabetical in the file explorer.