Free sound software for linux

Ice Sound Manager was designed to ease the management of sound events, sound themes, and the IceSound server in the IceWM environment under Linux/Unix. It is also intended to be an improvement upon the noble, but primitive icesndcfg.
The main improvements over icesndcfg include a support for sound event "themes", more comprehensive help, easy management and configuration of the IceSound server, a cleaner GUI interface, automatic starting of the IceSound server, and a more conservative approach to disk space usage. In addition, Ice Sound Manager includes a built-in "Setup" program which runs the first time you run Ice Sound Manager.
The application is written in Python (making it more easily ported across various platforms and architectures) and uses GTK through the PyGTK libraries. This application is available in both .tar.bz2, RPM, and static binary (for people without Python/PyGtk).
Please note that the tar.gz file does NOT need to be compiled (this is python, remember). System requirements are as follows: Python 2.2, PyGTK-2 1.9.9/2.0.0, IceWM (or IceWM-Gnome) 1.2.0 or better - with the IceSound Server executable (generally called, icesound or icesound-gnome). IceWM version 1.2.6 or better is highly recommended.
NONE of the following is required: Gnome, Gnome libs, or PyGnome (python-gnome). This application has NOT been tested with earlier versions of Python, IceWM, PyGTK, and IceSound Server. I cant say that it wont work with earlier versions, but I certainly cant say that it will. This application has NO dependencies on Gnome. 8-)
This software is distributed under the GPL license (included in the documentation and source code): Its free and open source for all legal and NON-commerical use, copying, modification, and redistribution, provided all of the authors credits are left in-tact and unmodified. This software is distributed AS-IS, with no warranty whatsoever. Copyright (c) 2002-2004 Erica Andrews (PhrozenSmoke[at]yahoo.com). All rights reserved.
Ice Sound Manager has been designed and tested in the following environment(s): Mandrake 8.1, SuSe 8.1, Kernel 2.4.8 / 2.4.19, Glibc 2.2.4 / 2.2.5, XFree86 4.0.1 - 4.3.0, Python 2.2 - 2.2.1, PyGtk 0.6.9/PyGtk-2 2.0.0, Gtk version 1.2.8-4-1.2.10, Gtk+2 version 2.0.6, IceWM 1.0.9 - 1.2.15, IceWM-Gnome 1.0.9 / 1.2.2, with both icesound and icesound-gnome sound server executables. The test computers (3) were all Pentium 1, ranging in memory from 64MB to 256MB - nothing spectacular. It should run well on very old computers.
Requierments:
- Access to a Bash shell (very important), Python (2.2 or better), PyGtk-2 (1.9.9/2.0.0 or better), and Gtk+ 2.0.6 or better - neither Gnome nor PyGnome is required. (IceWMCP versions 2.5 and earlier require Gtk+1 and PyGtk-1 0.6.9) Repeat: IceWM requires NOTHING gnome-related.
- Also, your version of PyGtk should have the Gdk-Pixbuf modules on your system. Please run ALL IceWMCP programs from a BASH shell: Using other shells such as ksh, pdksh, csh, tcsh, etc. is likely to cause problems. If your IceWMCP programs have trouble launching other applications, it is most likely because you are using something other than a Bash (/bin/bash) shell. Run the programs from Bash...period! If you attempt to run the application and get ANY kind of error that says something like "Import Error", it means YOU do not have all the necessary Python libraries installed or do not have them installed correctly: This is NOT a bug, so do not file a bug report when you dont have the necessary software properly installed. Getting Python and PyGtk and getting them setup right is YOUR business. DO NOT ask for help installing Python, PyGtk, or GdkPixbuf. I recommend you get them from: http://speakeasy.rpmfind.net. If you are using a Python version lower than 2.2 and are too lazy to upgrade, use the "binary" distribution of IceWM Control Panel, or dont bother at all. NOTE: These requirements apply only to the standard pure-python version of IceWM Control Panel. Compiled, binary copies of IceWM Control Panel are stand-alone executables that do NOT require Python or PyGtk.
- Disk space requirements: The standard, pure-Python version of IceWM Control Panel uses approximately 1.75-2.2 MB of disk space - very small! The compiled, binary version of IceWM Control Panel uses about 3.7 MB of disk space. Yes, the binary version is large, so people too lazy or impatient to install Python and PyGtk properly and choose to use the stand-alone binary version will pay with disk space. At last check, the Hardware (or System) plug-in uses about 1.9 MB of disk space (most of it being the hardware ID data file).

Sound Studio is a Tcl/Tk application written by Paul Sharpe as his third year individual project, for which he received the Microsoft Prize for Software Engineering. It was subsequently improved by Robin Whitehead.

It enables recording, playback and simple cut & paste editing of sound files of diverse formats on a PC equipped with a soundcard and the OSS (formally VoxWare) sound drivers.

It uses Lance Norskogs Sox for format conversion; the version weve used is bundled together with this software in its entirety to prevent incompatibility problems, although you should try it with your own sox if you have a more recent one.

Sound Studio is now "finished", but no doubt there are loads of bugs still to be found and features to be added.

KRecord is a KDE sound recorder. Easy to use. It can just record and playback wav-files, nothing else.

Can handle multiple files, you can drop files (from the file manager) to it, it can handle large sound files without problems. Has a input level display.

KRecord is much easier to use than "krec", which is an enigma in itself.

Compiles and Installs perfectly on Slackware 10.1 with KDE 3.4.1 and qt 3.3.4.

Just Click Record button and you can record...

Music player for mp3, ogg, wav, audiocd, mp3 streaming, ogg streaming.

Its fast, comfortable and able to use the appropriate sound drivers or daemons to male music, to encode in mp3 or ogg,and to stream directly to an icecast server (icecast2 or shoutcast).

somaplayer is even a sound daemon (sds- soma daemon sound), which is able to accept connections from more somaplayers at the same time or from any other sound player (xmms, mpg123 and others, thanks to a special wrapper.

All those sources are added and managed via driver or daemon, streammed or encoded as above.

tuneroid is a tuner for variety of musical instruments. It is designed to tune musical instruments on PC using a microphone or directly connecting the instrument to the PCs sound card.

Nosefart is a player for NES Sound Format (NSF) files (which consist of audio data ripped from Nintendo Entertainment System games).
It runs as a standalone player in Linux, with both command line and GTK interfaces, as well has having plugins for Winamp, XMMS, and CL-amp.
Enhancements:
- The file selection dialog now remembers what directory you used in the last session.
- If esd (or something else) is blocking the sound card, it now pops up an error rather than just hanging.

listener is a typical security-related program like the motion package (which detects motion on a Webcam): it listens for sound.

If listener detects any sounds, it starts recording until the sound stops (or a bit later, which is configurable). It stores the audio in .WAV files.

I would like to add a low-, high- and bandfilter to listener (plugins). Ive googled but could not find a simple example on how to implement this. So if anyone can help me?

VoiceApp records sound from soundcard (or any file) and converts it to frequency domain via FFT, showing the result in a window. The result is thrown on the screen in matrixish colors.