System-wide audio equalizer for the Mac. Basic edition is free and open source. Improves your audio listening on OSX / macOS. Experience music on your Mac, how it’s meant to be.

System-wide audio equalizer for the Mac. Basic edition is free and open source. Improves your audio listening on OSX / macOS. Experience music on your Mac, how it’s meant to be.

… Although Csound has a strong tradition as a tool for composing electro-acoustic pieces, it is used by composers and musicians for any kind of music that can be made with the help of the computer. Csound has traditionally been used in a non-interactive score driven context, but nowadays it is mostly used in in a real-time context. Csound can run on a host of different platforms including all major operating systems as well as Android and iOS. Csound can also be called through other programming languages such as Python, Lua, C/C++, Java, etc.
Opsound was a gift economy in action, an experiment in applying the model of free software to music. Musicians and sound artists were invited to add their work to the Opsound pool using a copyleft license developed by Creative Commons. Listeners were invited to download, share, remix, and reimagine.
o̶p̶s̶o̶u̶n̶d̶.̶o̶r̶g̶ now defunct
en.wikipedia.org/wiki/Opsound
Android app that allows you to look up online radio streams at RadioBrowser and listen to them. RadioBrowser is a wiki like approach to collecting as many online radio stations as possible. Everyone can help by not only adding new stations but also tagging existing ones.
Features:
An open-source cross-platform audible audiobook manager. With over 250 stars by github developers, OpenAudible is the trusted audio book content manager.

Lplex is a console application meant to provide a free, quick, and hopefully painless way to:
You’re already fully equipped for hi-res audio (up to 24-bit/96khz) if you have a typical dvd-player and digital amp, and lplex is a way to take advantage of this.
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
CUI ~ A faceted library browser plugin for Deadbeef. Columns-UI-like
github.com/VirInvictus/deadbeef-cui
github.com/topics/deadbeef
github.com/topics/deadbeef-plugin
en.wikipedia.org/wiki/DeaDBeeF
Pulseaudio Crossover Rack is a program to design and implement multi-way speaker crossovers using any linux powered computer with a multi-channel sound card and a running desktop environment which uses Pulseaudio as it’s sound backend. It also uses a set of LADSPA plugins, namely ladspa-t5-plugins for the heavy lifting of DSP/audio processing. It’s written in python3 and uses QT as the windowing toolkit.

TAudioConverter is a audio converter and extractor. It can convert almost any audio format to aac, ac3, mp3, flac, wav, ogg, opus or mpc. SoX is used to apply effects such as normalization, volume change etc. It can also extract audio streams from video files and encode them. Video files with more than one audio stream is supported. It is possible to run up to 8 simultaneous processes to shorten encoding time.

ozok.users.sourceforge.net
Download
Source
Wiki
Hydrogen Audio Topic
Doom9 Topic
Foobar component which displays information about currently played track via Discord Rich Presence.
github.com/TheQwertiest/foo_discord_rich
hydrogenaud.io/index.php/topic,116860.0.html
Alternative:
github.com/ultrasn0w/foo_drpc
if($stricmp($right(%filename_ext%,3),iso),Super Audio CD - 2.8MHz,%codec% - $ifgreater(%samplerate%,1000000,$insert($div(%samplerate%,100000),'.',$sub($len($div(%samplerate%,100000)),1)) MHz,$ifgreater($mod(%samplerate%,1000),0,$insert($div(%samplerate%,100),'.',$sub($len($div(%samplerate%,100)),1)) kHz,$div(%samplerate%,1000) kHz)) - %bitrate% kbps)
This tool is aimed at people migrating a music library from iTunes™ to Foobar2000, and allows you to keep the various statistics and dates that are saved by iTunes. It reads these fields from your iTunes Library XML, and writes them to the file tags that are expected by the import function of foo_playcount. You can transfer playlists too.
Overtone is an open source audio environment designed to explore new musical ideas from synthesis and sampling to instrument building, live-coding and collaborative jamming. We combine the powerful SuperCollider audio engine, with Clojure, a state of-the-art lisp, to create an intoxicating interactive sonic experience.