Randomplay allows you to play your music collection in random order with a memory of songs played preserved across sessions, so you don't "lose your place" if you have to shut down. It also has many features to make command-line music playing more convenient, including recursive regexp searching for tracks and the ability to specify a certain number of tracks, bytes, or minutes to play. It can also generate a list of music files to be loaded onto a portable music player device.
rebot3.pl renames MP3 files that you have grabbed from audio CDs with the track name, number, album, and/or artist. It does so by using either a remote CDDB server or a local CDDB created by cd (and other) players like xmcd, kscd or xmms. With rebot3.pl you can also add or remove ID3 (version 1) tags to/from the MP3 files.
The riofill utility randomly selects a list of MP3 files from a given directory and ensures they will all fit into the memory of a Diamond Rio portable MP3 player. Switches allow differently-sized Rios to be filled. By default, riofill uploads the playlist produced to a Rio player connected to the computer's parallel port using the Snowblind Alliance (SBA) Rio utility. Optionally, the generated playlist may be printed to stdout or saved in a file instead of being uploaded to the Rio.
rioutil is a utility designed for the use of interfacing with Sonic Blue/dnna's third, fourth, and fifth generations of flash MP3 players (Rio 600/800/900/S-Series/Riot/Cali/Chiba/Fuse and Nike psa[play). On many players, it goes beyond the packaged software by providing downloading.