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KsCD is a small, fast, CDDB enabled audio CD player which supports multiple platforms.

Pocket Sphinx is a frontend to the sphinxbase large-vocabulary, speaker-independent, continuous speech recognition engine. This is an early release of a research system. The APIs and function names are likely to change, and several tools still need to be made available to make this all complete. Once the system is built, try running the Perl script sphinx2-demo. The pocketsphinx-test script should run pocketsphinx-batch over an example utterance of "go forward ten meters."

PyKaraoke is a free karaoke player for Linux and Windows. You can use this program to play your collection of CDG, MIDI and MPEG karaoke songs. No songs are provided, you must obtain these from elsewhere.

Librem is a portable and generic library for real-time audio and video processing. Features - Audio buffering, mixing, codecs and resampling - Video mixing, rescaling and pixel format conversion

Rhythmbox is an integrated music management application, originally inspired by Apple's iTunes. It is free software, designed to work well under the GNOME Desktop, and based on the powerful GStreamer media framework.

RipIT is used to create MPEG-1 Layer 3 (mp3) using Lame, or uses Flac (flac), Ogg Vorbis (ogg) or Faac (m4a) to convert audio files (wav) extracted from an audio CD. It is a console based front-end (no GUI here), written in Perl, for various programs. The program will do the following without user intervention: * getting the audio CD Album/Artist/Tracks information from CDDB * ripping the audio CD Tracks * encoding to Flac, mp3 or Ogg * id3 tags encoded songs * creating an playlist (m3u) file * optionally generating a toc (cue) sheet for nice DAO burning * optionally preparing and send a CDDB submission and save it locally * optionally extracting hidden songs and split ghost songs * optionally creating md5sum files for all tracks * running several encoder processes at the same time and same run

Shorten reduces the size of waveform files (such as audio) using Huffman coding of prediction residuals and optional additional quantisation. In lossless mode the amount of compression obtained depends on the nature of the waveform. Those composing of low frequencies and low amplitudes give the best compression, which may be 2:1 or better. Lossy compression operates by specifying a minimum acceptable segmental signal to noise ratio or a maximum bit rate. Lossy compression operates by zeroing the lower order bits of the waveform, so retaining waveform shape. Permission is granted to use this software for decoding and non-commercial encoding (e.g. private or research use). If you intend to use shorten, be sure to check the full license, which can be displayed by "shorten -l".

This is a "Standard MIDI File" module, which handles encoding and decoding SMF. This includes a simple MML as an example of application.

SDL_sound is a library that handles the decoding of several popular sound file formats, such as raw, wav, mp3, flac, ogg, voc, shn, aiff, au, and some others. It is meant to make the programmer's sound playback tasks simpler. The programmer gives SDL_sound a filename, or feeds it data directly from one of many sources, and then reads the decoded waveform data back at her leisure. If resource constraints are a concern, SDL_sound can process sound data in programmer-specified blocks. Alternately, SDL_sound can decode a whole sound file and hand back a single pointer to the whole waveform. SDL_sound can also handle sample rate, audio format, and channel conversion on-the-fly and behind-the-scenes, if the programmer desires.

shntool is a multi-purpose WAVE data processing and reporting utility. File formats are abstracted from its core, so it can process any file that contains WAVE data, compressed or not -- provided there exists a format module to handle that particular file type. Apart from .wav shntool supports many formats through helper programs. Please see the manual page for more information.