Open Source Sound/Audio Software

The Bauer stereophonic-to-binaural DSP (bs2b) library and plugins is designed to improve headphone listening of stereo audio records. Recommended for headphone prolonged listening to disable superstereo fatigue without essential distortions.

libxmp is a library that renders module files to PCM data. xmp is a module player for Unix-like systems, based on libxmp, that plays over 90 mainstream and obscure module formats from Amiga, Atari, Acorn, Apple IIgs and PC, including Protracker (MOD), Scream Tracker 3 (S3M), Fast Tracker II (XM) and Impulse Tracker (IT) files.

A multi-platform software synthesiser emulating (somewhat inaccurately) pre-GM MIDI devices such as the Roland MT-32, CM-32L, CM-64 and LAPC-I. In no way endorsed by or affiliated with Roland Corp. Source hosted at: http://www.github.com/munt/

spatial-media provides tools for working with spherical video and spatial audio metadata so players and platforms can correctly render immersive media. The utilities inject, inspect, and extract metadata in common container formats (MP4/WebM) to signal 360° projection type, stereoscopy mode, and spatial audio layout. Creators use it to prepare 360/VR180 assets for upload so services know whether a video is monoscopic, top-bottom stereo, or side-by-side, and whether ambisonic audio is present. By separating metadata handling from encoding, the tools slot into existing editing/export workflows without requiring specialized NLE support. They help ensure assets play back with the right projection, field of view, and head-tracked audio in compliant players. For archive and validation use cases, the scripts can also read existing flags to diagnose why a video isn’t being recognized as immersive.

Source code for "mda" audio processing plug-ins in VST format. Available for many years as closed-source freeware from mda-vst.com

The Open Toolkit is an advanced, cross-platform, C# OpenGL, OpenAL and OpenCL wrapper for Mono/.Net. It is especially suitable to RAD development and can be used in games, GUIs (WinForms, WPF, GTK#) and scientific applications. The official repository can be found in github: https://github.com/opentk/opentk The sourceforge repository will no longer be updated, but will remain online for posterity.

A simple GUI written on .net for sacd_extract tool of sacd-ripper package

AudioCraft is a PyTorch library for text-to-audio and text-to-music generation, packaging research models and tooling for training and inference. It includes MusicGen for music generation conditioned on text (and optionally melody) and AudioGen for text-conditioned sound effects and environmental audio. Both models operate over discrete audio tokens produced by a neural codec (EnCodec), which acts like a tokenizer for waveforms and enables efficient sequence modeling. The repo provides inference scripts, checkpoints, and simple Python APIs so you can generate clips from prompts or incorporate the models into applications. It also contains training code and recipes, so researchers can fine-tune on custom data or explore new objectives without building infrastructure from scratch. Example notebooks, CLI tools, and audio utilities help with prompt design, conditioning on reference audio, and post-processing to produce ready-to-share outputs.

PortMedia was created to develop and share cross-platform, open-source I/O libraries for digital media including MIDI, video, and audio. Only a few things were released under the PortMedia umbrella. These are now hosted by the github.com/Portmidi/ project, where you can find the lastest versions of PortMidi, portsmf (Standard MIDI File support and more), and see github.com/rbdannenberg/scorealign for MIDI and/or Audio score alignment.

Ultratools is a suite of freeware for ultrastar songs. -The first freeware is Ultratools - Editor a really great editor, with a new song creation tool.

PersonaPlex is an open-source real-time conversational speech AI model that goes beyond traditional text chat by providing full-duplex speech-to-speech interaction, meaning it can listen and talk at the same time instead of waiting for you to finish speaking before responding. This architectural approach eliminates awkward pauses and makes conversations feel much more human-like, with natural behaviors such as overlapping speech, interruptions, and fluent turn-taking, traits that traditional AI assistants typically lack. PersonaPlex also supports persona and voice control, allowing developers to define the role and speaking style of the agent using text prompts and voice conditioning, making it suitable for applications like customized voice assistants, interactive character agents, or domain-specific conversational tools. Internally, it processes continuous audio streams in a hybrid input format so that speech understanding and generation occur jointly.

Volocian believes first and foremost that financial status shouldn’t be a barrier to entry in multimedia content creation. Whether you want to design a product or website, record a band, remix a song, or produce a feature length movie with professional post production graphics and effects, Volocian™ wants to help, even if you’re using borrowed hardware with no previous experience. We provide affordable products and services for any budget, including cost-free solutions for education and demo purposes, while everything we do is designed with ease of use and flexibility in mind, to suit everyone from novice hobbyists to expert professionals. Wherever possible, Volocian™ relies on free, open source, and cross-platform software to prevent vendor lock-in, planned obsolescence, and software as a service licensing. While we remain pragmatic about the use of proprietary software, as we’re aware of the feature limitations of some open source solutions, free solutions are preferred.

C, Python, Lua, and Erlang libraries for manipulating APEv2 tags.

A C and C++ Library + a compiler to create Adobe Flash SWF movies up to version 9 (v1.8.1). Supports nearly all the tags, includes an ActionScript compiler. Detailed docs and other tools: convert fonts to Flash, decompile Flash, jpg2swf. LASTEST IS 1.8.4

Znap is a c/python network mixing daemon and music server. It can load streams supported by fmod library (ogg/mp3/wav...) and mix them together. Can be controlled via Tcp or XmlRpc. Future releases will provide playlist/db and scheduling capabilities.

Epulse is a signal generator that can produce pulses, sine, triangular and rectangular waves with an unlimited level of modulations. It can be used in electronics to create test signals, or to make simple audio effects.

A realistic real-time sound simulation usable in games and other interactive applications. It will include effects like echo's, HRTF's, Doppler, sound occlusion and other effect. Offered as an easy high level library that can be used from C and C++.

AuraRT is a software framework for creating interactive multimedia software, particularly advanced interactive music compositions. A subproject is AuraFX, a flexible signal processor configurable by end-users.

Banshee plugin for automatically updating the track library (similar to Rhythmbox' behaviour) and inotify support

Boards is a commonly referred to as an Digital Asset Management Server and is intended to acquire, process, manage and distribute multimedia content.

CL-FMOD is a set of common lisp bindings to the fmod sound library. The bindings are completely written in lisp, with the help of the UFFI common lisp library for portability.

DSRE is a project designed to commoditize Internet radio broadcasting. Using DSRE, anyone with webhosting can access the world of online broadcasting, making the hosting of a radio stream no more difficult or expensive than the hosting of an HTML page.

Web Based MP3 Player. Listen to your home music from anywhere with a new browser and some Flash. Uses PHP5, SoundManager 2 and Mootools.

Fanimae is a desktop music information retrieval system.

Fripp is a music composition environment that uses a spreadsheet metaphor for manipulating music with built-in and user-created functions. Supports MIDI playback and recording. Displays music in common notation. Written in Python.