Audio Editor Deluxe is a visual multifunctional audio files editor which allow you to perform various operations with audio data such as displaying a waveform image of an audio file, applying more than 20 sound effects and 6 filters.
Downloads: 39915 - Shareware - Download Now

Xilisoft Audio Converter Pro is an all-in-one professional audio converter which can convert between different audio formats, extract audio from video formats, rip music CD to different audio formats, and create music CD from video/audio files.
Downloads: 62911 - Shareware - Download Now

Xilisoft MP3 Converter converts almost all popular audio formats (WMA, WAV, AAC, FLAC, OGG, APE, etc.) to MP3 audio files, and extracts MP3 music from just about any video formats including high-definition (HD) video formats.
Downloads: 68469 - Shareware - Download Now

AV Audio Editor is a full-featured digital audio editing software that offers a variety of audio recording, mixing, editing, analyzing and effects processing possibilities. It provides an intuitive, easy-to-use interface.
Downloads: 59917 - Shareware - Download Now

With the program you distort voices in form of wav files. You can change pitch and speed of the voice. Play voices/songs in a way you can't imagine.
Downloads: 85075 - Demo - Download Now