Wavosaur is a free audio editor with VST support and many features for editing
Server 1 Official Download
mpTrim is a simple and easy to use MP3 editor.
Piano and Music Keyboard Synthesizer for the personal computer.
Audacity is a free, easy-to-use audio editor and recorder for Windows, Mac OS X, GNU/Linux and other operating systems.
cutting any length audio clips out of video/audio files, then export to MP3 file
Mixman StudioPro, is the next step up in the Studio line.