Recommend Cool Edit PRO
(powerful multi-track recording software) an excellent digital music editor and MP3 production software. Many people describe Cool Edit as an audio "painting" program. You can "paint" with sounds: pitches, parts of songs, voices, strings, vibrato, noise or adjust mute. And it also provides a variety of special effects to add color to your works: amplification, noise reduction, compression, expansion, echo, distortion, delay, etc. You can process multiple files at the same time and easily cut, paste, merge, and overlap sound operations in several files. The sounds that can be generated using it include: noise, bass, silence, phone signal, etc.
The software also includes a CD player. Other features include: support for optional plug-ins; crash recovery; multiple file support; automatic silence detection and removal; automatic beat search; recording, and more. In addition, it can also convert between AIF, AU, MP3, Raw PCM, SAM, VOC, VOX, WAV and other file formats, and can be saved in RealAudio format.