Features:
- Supported audio formats: FLAC, WAV, AIFF.
- BitPerfect, zero CPU load streaming.
- Support for high-quality bit-depth upconversion.
- Support for VST 2.x plugins.
- Gapless playback.
- WASAPI (Exclusive mode) output.

Features:
- Supported audio formats: FLAC, WAV, AIFF.
- BitPerfect, zero CPU load streaming.
- Support for high-quality bit-depth upconversion.
- Support for VST 2.x plugins.
- Gapless playback.
- WASAPI (Exclusive mode) output.

Rhythmbox is a music playing application for GNOME.

wiki.gnome.org/Apps/Rhythmbox
en.wikipedia.org/wiki/Rhythmbox
Audio, video and CD/DVD player that uses DirectShow technology. It can read (but not modify) ID3/Ogg/APE/WMA tags and show sub/srt/aqt/dks subtitles. CD information can be obtained from freedb, CD-TEXT or cdplayer.ini and submitted to freedb.
Features:
- custom playback speed, single frame step, capture frame
- you can change subtitles color, size, font, vertical position
- no gap between audio tracks
- save audio to WAV file
- equalizer
- two visualizations – spectrum and oscilloscope

XMPlay is an audio player, supporting the OGG / MP3 / MP2 / MP1 / WMA / AAC / MP4 / WAV / AIFF / CDA / MO3 / IT / XM / S3M / MTM / MOD / UMX audio formats, PLS / M3U / ASX / WAX / CUE playlists, and ZIP archives. A load more audio and archive file formats are also supported via plugins.
When XMPlay was first released in 1998, only the XM file format was supported, hence the name “XMPlay”.
www.xmplay.com
support.xmplay.com
ssz.bitbucket.io (Input & Archive plugins)
Bluemindo is a really simple yet powerful audio player in Python/PyGTK, using Gstreamer. It’s a free (as in freedom) software, released under GPLv3, only.
Bluemindo’s user interface consists of a main view of all your digitized album discs, which is searchable and filterable. The playback mode is gapless and support ReplayGain (it can also automatically choose to switch between Album and Track modes, depending on the kind of music that’s being played). Last but not least, it brings playlist (automatic and user-made), MPRIS/MediaPlayer2 support and lyrics/artwork downloading.

bluemindo.codingteam.net
http://codingteam.net/project/bluemindo
PlayPcmWin is yet another open source audio player for audiophiles.
Features:
- Supports WASAPI exclusive mode playback. Bit-perfect capable.
- Memory play. Load all PCM data onto the main memory before the playback starts.
- Native C++ optimized code for the playback thread. C# .NET 4.0 WPF GUI for easy use.
- Supports WAV(16, 20, 24, 32bit), FLAC(16, 24bit), AIFF(16, 24bit) and AIFC-sowt and MP3.
- DoP playback of DFF and DSF files.
- Supports CUE sheets and M3U8 playlists.
- Gapless playback.
- Source code available.

sourceforge.net/p/playpcmwin/wiki/PlayPcmWinEn
sourceforge.net/projects/playpcmwin
ANMP aims to be a versatile but lightweight audio player, just as the other hundred thousands out there. It is written in C++11. As being only a frontend, ANMP itself doesn’t know anything about audio formats and how to decode them. That’s why it uses 3rd party libraries to decode them. By using VgmStream, GameMusicEmu, LazyUSF and supporting looped songs natively, ANMP is esp. suited to play various audio formats from video games. Moreover it supports Looped Midi Tracks.
Main Features:
- muting multichannel audio files
- gapless playback (for most streamed audio formats)
- arbitrary (forward) looping of songs (i.e. even nested loops)
- synthesizing MIDI files using fluidsynth
- multi-channel audio rendering
- overlapping notes do not kill each other
- unrolling looped MIDI tracks
- volume response compatible to N64’s software synth
- supports an IIR lowpass filter compatible to Rareware‘s N64 games (Conkers Bad Fur Day, Jet Force Gemini)
- support for cue sheets
- support for audio normalization based on EBU R 128
- exposes basic commands via D-Bus

Features:
- Most audio formats supported: MP3, FLAC, OGG, WMA, AIFF, etc.
- Gapless playback
- Tags & Cover Art support
- Keyboard shortcuts

DeaDBeeF (as in 0xDEADBEEF) is a modular audio player for GNU/Linux, *BSD, OpenSolaris, macOS, and other UNIX-like systems.
DeaDBeeF lets you play variety of audio formats, convert between them, customize the UI almost any way you want, and use many additional plugins which can extend it even more.

deadbeef.sourceforge.net
deadbeef.sourceforge.net/download
deadbeef.sourceforge.io/plugins.html
play.google.com/store/apps/details?id=org.deadbeef.android
cmus is a small, fast and powerful console music player for Unix-like operating systems.

A music player for the desktop. Designed to be powerful, simple and streamlined, putting the user in control of their music collection. Uses the proprietary BASS audio library for playback.
