TwistedWave - TwistedWave is one of the unique audio editors that allow you to edit your music file online without any installation.
Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.
Radium - Radium is a music editor with a new type of interface.
Wave Editor - Wave Editor is a fast and easy digital audio editing software for Windows.
SoundEngine - Freeware audio editor/recorder
WaveMax Sound Editor - WaveMax Sound Editor is an ideal solution for audio editing and mastering.