JaWaedit is WAVE editor written in pure Java. It allows you to edit .wav and .au files, apply various effects and convert stream parameters. Pretty impressive WYSIWYG edit'and'listen interface. Requires Java 1.1.x.

The common task to solve with JaWaedit: cut MP3 files with reverberation and fade-out effects to put them onto the Web.

Another good programs to use with JaWaedit are: Sox command-line sound file converter, PM123/Z! players and any MP3 encoder like Lame.