T.E.A.R. (pronounced Tair) is a console-based frontend for common MP3/OGG creation tools which automates all of the settings involved in ripping and encoding a CD. TEAR uses the CDDB database at freedb.org to name, organize, and add ID3 tags to each encoded file. It can use either cdparanoia or cdda2wav to rip .WAV files from the CD and it can use lame, bladeenc, gogo, or OggEnc to encode them. TEAR also supports SMP.
Sajber Jukebox is a mpeg layer 3 player with a graphical user interface. It's based on Woo-jae Jung's splay for the audio and QT's graphical library for the interface. The Jukebox maintains pointers to songs on the local system or the net, and when the user wishes to play it, it opens the location and migrates the filedescriptor to the playing process. The advantage of this scheme is that the Jukebox doesn't need to worry about playing the darn thing, and the player won't have to worry about where the song is, since it'll just see the filehandle given to it, and couldn't care less of where it originally came from.
TinySID is a very small SID player. Current features include 99% 6510 CPU emulation and fat 6581 SID emulation including filters (which sound different to other players). It has nothing to do with other projects such as SIDPlay, and the 6510/6581 emulation is based on routines by Tammo Hinrichs that have been further developed.
Tunez is an MP3/Ogg jukebox that works with a voting system. You can vote for your favorite tracks via the Web interface, and the Tunez daemon will take care of the rest. It is ideal for shared work environments and LAN parties. Tunez also works equally well as an interface to an Icecast server (v2.0 is supported via Ices v0.3). Tunez makes it easy to update ID3 tags for all your MP3s. Support for grabbing Amazon art in included for all of your favorite albums. A full user/group permission scheme is available so that you can customize Tunez for your own use.
Unix Amiga Delitracker Emulator (UADE) plays most Amiga music file formats by simulating Amiga hardware and software. It plays approximately 200 Amiga music file formats. It provides a command line tool for playing, but it also provides music player plugins for XMMS and Audacious. For other music players, there is a FUSE filesystem that transparently converts Amiga songs to WAV files.
VLC media player is a multimedia player, framework, streamer, and encoder. It can play inputs like files, network streams, DVDs, audio CDs, Blu-Rays, capture devices, and screens. It can play most audio and video codecs and formats (MPEG 1/2/4, H264, VC-1, DivX, WMV, Vorbis, AC3, AAC, MKV, etc.), but can also be used to convert to different formats and/or send streams through the network.