Audio Tag Editor
Kid3 audio tag editor can edit the tags of MP3, Ogg, FLAC, MPC & WMA files in an efficient way, convert between ID3v1 and ID3v2, set the tags of multiple files, generate tags from file names or vice versa and import from freedb, MusicBrainz and Disco
SoX is the Swiss Army Knife of sound processing utilities. It can convert audio files to other popular audio file types and also apply sound effects and filters during the conversion.
JavaAmp is an clone of the well known multimedia player Winamp written in Java. It uses the Lightweight Java Game Library (LWJGL) and FMOD for playing music and visualizing it.
The Linux Media Center (LMC) is an attempt to create a clone of Windows Media Player. It'll be having almost all the features of WMP and many more. It'll be play audio as well as video. It is being written using the GTK libraries and GStreamer.
A audio player can rolled display lyrics while playing a music for Linux. This player uses javazoom decoder as the core decoder. All these base on Java, interface with SWT implemented.(Linux + Java)
Radio Tray is a streaming player for listening to online radios. Any bug or feature request should be reported in https://bitbucket.org/carlmig/radio-tray/issues
Cross-platform player and audio manager
aTunes is a powerful, full-featured, cross-platform player and manager, with support for online radios, podcasts and CD ripping.
Subsonic is a complete, personal media streaming solution.
Subsonic is a web-based media streamer, providing ubiquitous access to your music and video collection. More than 20 apps are available for Android, iPhone, Windows Phone, BlackBerry, Roku, Chumby, Sonos etc. Supports virtually all media formats, converting files on the fly. Also includes a Podcast receiver and jukebox feature allowing you to control what's playing on your computer from your mobile phone.
TuxGuitar is a multitrack guitar tablature editor and player written in Java-SWT, It can open GuitarPro, PowerTab and TablEdit files.
This is the fast and Free (LGPL license) real time MPEG Audio Layer 1, 2 and 3 decoding library and console player. It uses floating point or integer math, along with several special optimizations (3DNow, SSE, ARM, ...) to make it most efficient.
Live MP3/OGG/AAC Flash Player for Icecast and Shoutcast. It has some interesting and necessary features like reconnect on network errors to make sure users never get silence and cache management to avoid memory memory consumption. Works with Flash 10.1 and newer.
TiMidity++ is an open source MIDI to WAVE converter and player.
Free media player with support for Youtube
SMPlayer is a free media player for Windows and Linux with built-in codecs that can also play YouTube videos. One of the most interesting features of SMPlayer: it remembers the settings of all files you play. So you start to watch a movie but you have to leave... don't worry, when you open that movie again it will be resumed at the same point you left it, and with the same settings: audio track, subtitles, volume... SMPlayer is a graphical user interface (GUI) for the award-winning MPlayer, which is capable of playing almost all known video and audio formats. But apart from providing access for the most common and useful options of MPlayer, SMPlayer adds other interesting features like the possibility to play YouTube videos subtitles. Note: for those people complaining about malware in the windows installer: be sure you download SMPlayer from the official website. Our installer is completely safe and free of malware.
A portable MP3/WMA/OGG/FLAC file manager for Sony players. Simply copy it on your usb player and use it wherever you are! It is an alternative to SonicStage. (Was NW-E00x Mp3 File Manager...)
Your Advanced jukebox
Jajuk is a jukebox for all platforms. The goal of this project is to provide a fully-featured application to advanced users with large or scattered music collections. (Note: the codebase is now hosted at http://gitorious.org/jajuk/jajuk .)
Aria Maestosa is a midi sequencer/editor. It lets you compose, edit and play midi files with a few clicks in a user-friendly interface offering score, keyboard, guitar, drum and controller views.
Browser-based online video editor and encoding API
Search, Download, Play, Share on Bittorrent, YouTube and the cloud
FrostWire http://www.frostwire.com/ is a media player and Peer to Peer (P2P) information sharing client for the BitTorrent network. This project is not affiliated with LimeWire LLC. FrostWires' source code is Licensed under the GNU GPL Open Source license
This software allows you to view a multimedia library (audio, video) with 3D interface. It can play multimedia files with an internal player or by calling any other external player (ex: VLC, Winamp, Foobar, Media player ...) It supports plugins and skin.
This SourceForge project page is obsolete. Please visit http://www.musicpd.org/
XBMC Skinning Project is a side-project for hosting open source skins and skinning tools for XBMC Media Center. Any skin author/developer may apply to join to get write access to this projects CVS/SVN/GIT, tracking tools, file publishing, and more.
Web frontend for MPD and Mopidy
Rompr is a music player that lets you discover more about the music you love and discover new music you don't even know yet. It is a client for the mpd and mopidy music servers. It runs in a web browser on any device. It plays your local music, internet radio, podcasts and anything supported by Mopidy - eg Spotify, SoundCloud, Youtube. With Spotify support it can provide automatic playlists based on your listening habits and recommend new music. On top of all that, you can use Rompr in a browser on one computer to play music out of another. So if you have a media centre connected to your Hi-Fi, Rompr can control it. It supports most modern mobile devices too. Its looks are inspired by Amarok 2. Please use the Wiki link above to get installation instructions and a basic usage guide.
RadioSymba is the Internet-radio player and recorder for Symbian OS.
RadioSymba is the Internet-radio player and recorder for Nokia S60v5 or later Symbian smartphones. It has a built-in catalog containing over 3000 radio stations sorted by genres and styles. It has advanced features for recording audio streams to files.
PyKaraoke is a cross-platform karaoke player. It currently supports CDG (MP3+G, OGG+G, WAV+G), MIDI (.KAR, .MID) and MPEG formats.