JavaZOOM

jClientUpload is a Java component enabling file and folder uploads from a client to a Web or FTP server.

jlGui is a free and open source music player that can play various audio formats, including MP3, WAV, AIFF, AU, SPEEX, and more, using JavaSound. This software is licensed under LGPL.

JLayer is a JAVA platform library that efficiently unravels, plays, and converts MPEG Layer MP3 in real-time for free. It is an open-source software that is licensed under the LGPL.

Java Sound now has a free MP3 SPI software that allows for the playback of MP3 files.

VorbisSPI is a Java Service Provider Interface that enables the use of OGG Vorbis audio format and icecast streaming on the Java platform. It is an open source and free software.