BeatPacker is a simple Python script that uses an M3U playlist to generate a temporary folder filled with files that can be easily transferred to a portable music player. It's designed to be used as a target for drag-and-drop, a nautilus-scripts right-click action, or similar purposes. A Windows installer is available.
Cjukebox is a curses-based player and manager for audio files and playlists. Its user interface was inspired by the Norton Commander for DOS. It does not rely on a separate database application. Playback is handled by the Musicus tool, which plays all audio formats supported by xmms (wav, Ogg, MP3, Flac, MPC, etc.).
Cymbaline is a learning music player. It sets a score for each track based on your listening habits, and you can set thresholds to create playlists with your favorite tracks automatically. In random mode, it will play your favorite tracks more often. It also allows album-based navigation: you can start playing the next album, skip 2 albums ahead, go to a specific album, etc. It has a random queue mode where you see a list of randomly chosen tracks that play consecutively. The queue is also built based on song scores.
DJBorg turns your MP3 playlist into a personalized radio station, adding randomly-generated DJ banter between tracks. Song information (based on ID3 tags), news, weather, headlines, and witty remarks are announced via a text-to-speech engine. It is fully customizable via a rules file or Python code. It is compatible with WinAmp and other players that support the .m3u format.
DR14 T.meter is a commandline tool for computing the Dynamic Range of your music according to the procedure used in the offline meter released by the Pleasurize Music Foundation. It is very useful to measure how loud your music is and to understand that a good quality album always has a good dynamic. It's also useful for understanding the effects of the so-called loudness war.
FUPlayer is a full featured music manager and player for the GNOME desktop. With it, you can play music from your hard drive, create playlists, do real file management using its Trash, and play, rip, and burn audio CDs. It features an interface similar to those of many modern manager-style players, but with many improvements, such as true non-modal search and browse functionality, find-as-you-type, and drag destination highlighting. It aims to be extremely user friendly and efficient to use.
Flac2All is a multi-threaded script that will convert your collection of FLAC files into either Ogg Vorbis, MP3 (with the Lame encoder), or FLAC, complete with any tags and identical file/folder structure. The script has been stable for about a year now, and it has been known to saturate 8-core machines with parallel conversions. It is useful for people with with large FLAC collections who also want a lossy version for portable media players. If wanted, the script can perform updates by skipping already converted files. It has only been tested on Linux, but it should work without alteration on the other Unix systems with bash and the required dependencies.
Freevo is a Linux application that turns a PC with a TV capture card and/or TV-out into a standalone multimedia jukebox/VCR/PVR/HTPC/DVR/set-top box. It uses MPlayer and other applications to play and record audio and video. It is optimized for use with a TV and remote, but can be used with a monitor and keyboard.