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media-sound/lingot

Accurate, easy to use, and highly configurable musical instrument tuner

media-sound/ecasound

a package for multitrack audio processing

media-sound/mhwaveedit

GTK+ Sound file editor (wav, and a few others.)

media-sound/moc

Music On Console - ncurses interface for playing audio files

media-sound/darkice

A live audio streamer

media-libs/aubio

Library for audio labelling

media-libs/mlt

Open source multimedia framework for television broadcasting

media-libs/allegro

Cross-platform multimedia library

media-libs/libprojectm

A graphical music visualization plugin similar to milkdrop

media-sound/sndfile-tools

Small collection of programs that use libsndfile

media-sound/baudline

A time-frequency browser designed for visualization of spectral domains

media-libs/openal

Software implementation of the OpenAL 3D audio API

mail-client/thunderbird

Thunderbird Mail Client

www-client/firefox

Firefox Web Browser

net-wireless/gnuradio

Toolkit that provides signal processing blocks to implement software radios

media-sound/din

a software musical instrument and audio synthesizer

media-sound/jalv

Simple but fully featured LV2 host for Jack

media-video/mpv

Media player for the command line

media-libs/rtaudio

A set of cross-platform C++ classes for realtime audio I/O

media-libs/avidemux-plugins

Plugins for the video editor media-video/avidemux

media-libs/libsdl2

Simple Direct Media Layer

games-emulation/retroarch

Reference frontend for libretro-based emulators

media-plugins/calf

A set of open source instruments and effects for digital audio workstations

games-emulation/pcsx2

PlayStation 2 emulator

games-arcade/stepmania

Advanced rhythm game, designed for both home and arcade use

media-libs/rtmidi

A set of C++ classes that provide a common API for realtime MIDI input/output

media-video/simplescreenrecorder

A Simple Screen Recorder

media-video/obs-studio

Software for Recording and Streaming Live Video Content

media-sound/cava

Console-based Audio Visualizer for Alsa

media-libs/libsoundio

C library for cross-platform real-time audio input and output

net-voip/baresip

Baresip is a portable and modular SIP User-Agent

media-radio/liquidsoap

A swiss-army knife for multimedia streaming, used for netradios

media-sound/fmit

Free Music Instrument Tuner

media-sound/supercollider

Environment and programming language for real time audio synthesis

www-client/torbrowser

The Tor Browser

media-sound/pure-data

A real-time graphical programming environment for audio and graphics processing.

media-video/webcamoid

Full featured webcam capture application

media-sound/sequencer64

Reboot of seq24, a minimal loop based midi sequencer

media-sound/bitwig-studio

Multi-platform music-creation system for production, performance and DJing

media-video/pipewire

Multimedia processing graphs

media-libs/lsp-plugins

Linux Studio Plugins

gui-apps/waybar

Highly customizable Wayland bar for Sway and Wlroots based compositors

www-client/icecat

GNU IceCat Web Browser

media-sound/scream

Plays sound received from network or from a QEMU Windows VM

media-sound/new-session-manager

A tool to assist music production by grouping standalone programs into sessions

media-plugins/zam-plugins

Collection of LV2/LADSPA/VST/JACK audio plugins for high quality processing

media-sound/shairport-sync

Shairport Sync is an AirPlay audio player

sci-biology/open-ephys-gui

Processing, recording, and visualizing multichannel ephys data

media-sound/pianobooster

A MIDI player/game that displays notes and teaches you how to play the piano

games-emulation/xemu

Original Xbox emulator.