Audio and Sound

This open source applet plays any MP3 or OGG Vorbis loaded from the web server.

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Developer: JavaZOOM
License: GNU Lesser General Public License (LGPL)
Operating System: Java

P2P-Radio is a program that can distribute audio and video streams (MP3/Ogg Vorbis/NSV) over the Internet in a peer-to-peer manner.

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Developer: Michael Kaufmann
License: GNU General Public License (GPL)
Operating System: Windows, Mac OS X, Linux

Stream-2-Stream's multicast+ is the next generation of streaming.

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Developer: Jason Hooks
License: GNU General Public License (GPL)
Operating System: Any Platform that supports java

As a library of classes for generating and manipulating music and sound, jMusic provides a solid framework for computer assisted composition in Java.

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Developer: jmusic
License: GNU General Public License (GPL)
Operating System: All 32-bit MS Windows (95/98/NT/2000/XP), All BSD Platforms (FreeBSD/NetBSD/OpenBSD/Apple Mac OS X), All POSIX (Linux/BSD/UNIX-like OSes), Linux, OS X, Solaris, Apple Mac OS Classic

Online Guitar Tuner java applet which analyse your microphone or any other sound input to find fundamental frequency using a Fast Fourier Transform.

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Developer: openstudio.fr
License: GNU General Public License (GPL)
Operating System: OS Independent (Written in an interpreted language)