C Sound/Audio Software

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Browse free open source C Sound/Audio Software and projects below. Use the toggles on the left to filter open source C Sound/Audio Software by OS, license, language, programming language, and project status.

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  • 1
    mpg123
    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.
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    Downloads: 15,858 This Week
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  • 2
    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.
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    Downloads: 9,752 This Week
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  • 3

    opencore-amr

    Audio codecs extracted from Android Open Source Project

    Library of OpenCORE Framework implementation of Adaptive Multi Rate Narrowband and Wideband (AMR-NB and AMR-WB) speech codec. Library of VisualOn implementation of Adaptive Multi Rate Wideband (AMR-WB) encoder and Advanced Audio Coding (AAC) encoder. Modified library of Fraunhofer AAC decoder and encoder.
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    Downloads: 7,572 This Week
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  • 4
    Matroska is an open standard audio/video container format. Visit our homepage at http://www.matroska.org
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    Downloads: 6,277 This Week
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  • 5
    LAME (Lame Aint an MP3 Encoder)

    LAME (Lame Aint an MP3 Encoder)

    A high quality MP3 encoder

    LAME is an educational tool to be used for learning about MP3 encoding. The goal of the LAME project is to improve the psycho acoustics, quality and speed of MP3 encoding. Note: we provide source code only!
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    Downloads: 30,290 This Week
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  • 6
    Super Audio CD Decoder
    Super Audio CD Decoder input plugin for foobar2000. Decoder is capable of playing back Super Audio CD ISO images, DSDIFF, DSF and DSD WavPack files. DSD(DoP) and PCM output modes. Separate DSD Processor/DSD Converter plugins for track extraction into DSD/DST encoded files.
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    Downloads: 4,074 This Week
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  • 7

    ffdshow

    A DirectShow and Video for Windows codec (VFW)

    ffdshow is an advanced DirectShow filter and Video for Windows codec (VFW) codec that supports many audio and video formats. For example: H.264, MPEG-4, MPEG-2, H.263, VP3, VP6, Theora, MJPEG, SVQ3, MP3, AC3, DTS, E-AC3, AAC, and Vorbis.
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    Downloads: 2,689 This Week
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  • 8
    Burn

    Burn

    Simple but advanced disc burning for macOS

    Create data discs with advanced data settings. Create video and audio discs, Burn will convert if needed. Create DVD-Video discs. Recreate discs. Burn doesn't reinvent the wheel, it uses many powerful open source Unix utilities and is also open source.
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    Downloads: 2,340 This Week
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  • 9
    The SoX Resampler library

    The SoX Resampler library

    High quality, one-dimensional sample-rate conversion library

    The SoX Resampler library `libsoxr' performs one-dimensional sample-rate conversion—it may be used, for example, to resample PCM-encoded audio. It aims to give fast and high quality results for any constant (rational or irrational) resampling ratio. Phase-response, preserved bandwidth, aliasing, and rejection level parameters are all configurable; alternatively, simple `preset' configurations may be selected. An experimental, variable-rate resampling mode of operation is also included.
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    Downloads: 2,334 This Week
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  • 10
    BlackHole

    BlackHole

    BlackHole is a modern macOS audio loopback driver

    BlackHole is a modern virtual audio loopback driver for macOS that allows audio to be routed between applications with zero additional latency. It is widely used by musicians, streamers, developers, and audio engineers who need reliable internal audio routing without external hardware. BlackHole supports a wide range of sample rates and configurable channel counts, making it flexible for both simple and advanced audio workflows. The driver integrates directly with macOS Core Audio and appears in Audio MIDI Setup and supported audio applications. Designed with performance and stability in mind, BlackHole works on both Intel and Apple Silicon Macs without requiring kernel extensions or system security modifications. As an open-source project, it offers transparency, customization options, and active community-driven development.
    Downloads: 160 This Week
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  • 11
    Freeware Advanced Audio Codec
    FAAC is an Advanced Audio Coder (MPEG2-AAC, MPEG4-AAC). The goal of FAAC is to explore the possibilities of AAC and exceed the quality of the currently best MP3 encoders. You can submit pull requests via GitHub: https://github.com/knik0/faac https://github.com/knik0/faad2
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    Downloads: 780 This Week
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  • 12
    MAD is a high-quality fixed-point MPEG audio decoder with 24-bit output. The implementation is entirely new, based on the ISO/IEC standards, and performs especially well on systems without native floating-point support.
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    Downloads: 1,841 This Week
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  • 13
    mp3splt

    mp3splt

    utility to split mp3, ogg vorbis and FLAC files without decoding

    mp3splt is a free utility to split mp3, ogg vorbis and FLAC files without decoding, selecting begin/end time; if file is an album, you can get splitpoints automatically from internet or a local cue, cddb file. It also splits Mp3Wrap and AlbumWrap archives. Supports splitting and trimming by silence detection. For mp3 files, both ID3v1 and ID3v2 are supported using original tags or user defined tags.
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    Downloads: 428 This Week
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  • 14
    savonet
    Audio toolkit for streaming, aiming at complex Internet radio systems. Our stream generator is highly extensible and flexible. Script based, it can be a fully automatic daemon streamer, but is also used for live shows with an user-friendly GUI.
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    Downloads: 447 This Week
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  • 15
    Bauer stereophonic-to-binaural DSP

    Bauer stereophonic-to-binaural DSP

    Headphones like a loudspeakers

    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.
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    Downloads: 428 This Week
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  • 16
    butt (broadcast using this tool)

    butt (broadcast using this tool)

    Icecast and Shoutcast broadcasting client

    NOTE: This site is not maintained anymore. If you want to get the latest news and releases please visit https://danielnoethen.de/butt. butt (broadcast using this tool) is an easy to use, multi OS streaming tool. It supports ShoutCast and IceCast and runs on Linux, MacOS and Windows. The main purpose of butt is to stream live audio data from your computers Mic or Line input to an Shoutcast or Icecast server. Recording is also possible. It is NOT intended to be a server by itself or automatically stream a set of audio files.
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    Downloads: 309 This Week
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  • 17
    Gnaural

    Gnaural

    Entrain your brain!

    A programmable audio generator intended as an aural aid to meditation, implementing the binaural beat principle as described in Gerald Oster's Oct. 1973 Scientific American article "Auditory Beats in the Brain."
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    Downloads: 234 This Week
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  • 18
    Extended Module Player

    Extended Module Player

    A multi-format module player and library

    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.
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    Downloads: 328 This Week
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  • 19
    FLAC is a free lossless compressed audio format which supports streaming and archival. The FLAC project maintains the format and provides a reference encoder/decoder and input plugins for several popular audio players.
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    Downloads: 217 This Week
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  • 20
    id3lib is/was a software library for reading, writing, and manipulating ID3v2 tags. Additionally it is possible to get some basic mp3 header information like bitrate etc. However, we now recommend moving to taglib. https://taglib.org/
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    Downloads: 360 This Week
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  • 21
    MMC is a commander-style media player for Windows, with native, hw accelerated video playing and translucent gui. Mpxplay is a console audio player for DOS and Win32 operating systems. x264vfw, x265vfw and xAV1vfw are video for windows encoder and decoder codecs, useful with VirtualDub.
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    Downloads: 213 This Week
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  • 22
    fre:ac - free audio converter

    fre:ac - free audio converter

    Audio converter and CD ripper for various formats

    fre:ac is a free audio converter and CD ripper for various formats and encoders. It features MP3, MP4/M4A, WMA, Ogg Vorbis, FLAC, AAC, and Bonk format support, integrates freedb/CDDB, CDText and ID3v2 tagging and is available in several languages.
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    Downloads: 166 This Week
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  • 23
    Multimedia architecture consisting of libraries and applications. Libraries include gavl for low level audio/video support and gmerlin_avdecoder, a multiformat decoding library. Applications include a GUI player with mediatree and a GUI transcoder.
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    Downloads: 326 This Week
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  • 24
    A lightweight library to handle the sending and receiving of messages according to the Open Sound Control (OSC) protocol.
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    Downloads: 309 This Week
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  • 25
    FluidSynth

    FluidSynth

    Software synthesizer based on the SoundFont 2 specifications

    FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications and has reached widespread distribution. FluidSynth itself does not have a graphical user interface, but due to its powerful API several applications utilize it and it has even found its way onto embedded systems and is used in some mobile apps.
    Downloads: 32 This Week
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