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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.

The Snack Sound Toolkit is designed to be used with a scripting language such as Tcl/Tk or Python. Using Snack you can create powerful multi-platform audio applications with just a few lines of code. Snack has commands for basic sound handling, e.g. sound card and disk I/O. Snack also has primitives for sound visualization, e.g. waveforms and spectrograms. It was developed mainly to handle digital recordings of speech, but is just as useful for general audio. Snack has also successfully been applied to other one- dimensional signals. The combination of Snack and a scripting language makes it possible to create sound tools and applications with a minimum of effort. This is due to the rapid development nature of scripting languages. As a bonus you get an application that is cross-platform from start. It is also easy to integrate Snack based applications with existing sound analysis software.

Snd is a sound editor modeled loosely after Emacs and an old, sorely-missed PDP-10 sound editor named Dpysnd. It can accommodate any number of sounds, each with any number of channels, and can be customized and extended using Guile, Ruby or Forth. Included with it are some command-line utilities: - snd-info (note: renamed from sndinfo, for this FreeBSD port) prints a description of a sound file. - sndplay plays a sound file. - sndrecord records sound from a microphone. - audinfo describes the current state of the audio hardware.

Sonata is a lightweight GTK+ music client for the Music Player Daemon (MPD). It aims to be efficient (no toolbar, main menu, or statusbar), user-friendly, and clean. FEATURES: + Expanded and collapsed views, fullscreen album art mode + Automatic remote and local album art + Library browsing by folders, or by genre/artist/album + User-configurable columns + Automatic fetching of lyrics + Playlist and stream support + Support for editing song tags + Drag-and-drop to copy files + Popup notification + Library and playlist searching, filter as you type + Audioscrobbler (last.fm) 1.2 support + Multiple MPD profiles + Keyboard friendly + Support for multimedia keys + Commandline control + Available in 24 languages

MIDI Player Pro allows you to play any kind of MIDI music in seconds with your fingertips. List of supported features: - Raw MIDI. - Jack MIDI. - Import from lyrics sites (chorded lyrics) - Import from GuitarPro v3 and v4 format. - Loading and saving from and to standard v1.0 MIDI files. - Realtime MIDI processing. - Simple sequence looping. - 30000 BPM MIDI recording and playback. - Undo/Redo support. - Printing music like PDF.

Sphinx 3 is a frontend to the sphinxbase, a large-vocabulary, speaker-independent, continuous speech recognition engine. Once the system is built, try running the Perl script sphinx3-demo. The sphinx3-test script should run sphinx3-batch over an example utterance of "go forward ten meters."

Sphinx Base is part of a large-vocabulary, speaker-independent, continuous speech recognition engine. This port is required for PocketSphinx and Sphinx3 Once the system is built, try running the Perl script sphinx-demo. The sphinx-test script should run sphinx-batch over an example utterance of "go forward ten meters."

SpiralLoops is an experimental loop-based sampler for Linux and FreeBSD. The idea of SpiralLoops is to provide a simple, visual tool for looping and layering of sounds; which can be sourced from either WAV files on disk, or from sound-generating plugins. SpiralLoops allows you to create loop-based compositions with the minimum feedback time between the decisions you make and your ears. The looping mechanism is very flexible; you can lock the timing of loops together, or offset them for creating complex sequences, such as polyrhythms. Loop triggers can be used to cause interaction between the loops, and as an experimental way of creating music.

adapted from the Web page and the README: Spiral Synth is a physically modelled, monophonic, analogue synthesizer. It is capable of creating the kind of sounds made by hardware analogue synths, the noises used in electronic music. You can also use it to make stranger sounds. MIDI is supported, including velocity detection, mapped to the volume of the oscillators (but you can also use the PC keyboard to play the synth). Output is to /dev/dsp or in Microsoft RIFF (.WAV) format to a file. You can save and recall your sounds using the 100 patch save slots. The PC keyboard can be used to play the synth, "q" & "z" are C, and the keys progress from them: "2" is C#, "w" is D, etc. These are just the defaults, and can be changed from the .Spiralrc file. The function keys change the octave. Sample output and a detailed list of features can be found on the home page. Trevor Johnson