I think this is complete  audio editor, with WavePad you can edit music or voice and other audio recording. You can very easy to cut, copy and paste parts of recording and also you can add effect like echo, mplification and noise reduction. Wavepad support wav, mp3,  vox, gsm, real audio, au, aif, flac, ogg and more.
Features

* Sound editing functions include cut, copy, paste, delete, insert, silence, autotrim and more.
* Audio effects include, amplify, normalize, equaliser, envelope, reverb, echo, reverse, sample rate conversion and more.
* Full featured Mp3 editing software support.
* Supports a number of other file formats including wav (multiple codecs) vox, gsm, real audio, au, aif, flac, ogg and many more.
* Batch processing supports up to 32000 files allowing you to apply effects and/or convert your files as a single function.
* Tools include spectral analysis (FFT) and speech synthesis (text-to-speech).
* Recorder supports autotrim and voice activated recording and more.
* Audio restoration features including noise reduction and click pop removal.
* Supports sample rates from 6000 to 96000Hz, stereo or mono, 8, 16, 24 or 32 bits.
* Includes its own CD ripper with ‘ultrafast ‘rip mode and cddb music database lookup.
* Works directly with MixPad multi-track audio mixing software.
* Links directly to the Express Burn CD Recorder to burn your sound files to CD.
* Edit tracks for the Zulu DJ software.
* Easy to use interface will get you started editing in just minutes.

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