Audacity the key to effective home voiceover production.
Audacity is a free, easy-to-use audio editor and recorder for Windows, Mac OS X, GNU/Linux, and other operating systems.
You can use Audacity to Record live audio, convert tapes and records into digital recordings or CDs, edit Ogg Vorbis, MP3, and WAV sound files, cut, copy, splice, and mix sounds together, change the speed or pitch of a recording, and more.
Click Here!
Click Here!
http://www.transom.org/tools/editing_mixing/200404.audacity.html
Adobe Audition (Expensive)
For demanding audio and video professionals, Adobe Audition offers advanced audio mixing, editing, and effects-processing capabilities. Its flexible workflow, combined with exceptional ease of use and precise tools, gives you the power to create rich, nuanced audio of the highest possible quality.
Cool Edit Pro
Cool Edit PRO is the software solution , whether you are an audio engineer, multimedia creator, web developer, or a musician.
Download free trial:
http://www.softpedia.com/get/Multimedia/Audio/Audio-Editors-Recorders/Cool-Edit-Pro.shtml
Download free trial:
http://www.softpedia.com/get/Multimedia/Audio/Audio-Editors-Recorders/Cool-Edit-Pro.shtml
WavePad
WavePad audio editing software is a sound editor program for Windows. This audio editing software lets you make and edit voice and other audio recordings. When editing audio you can cut, copy and paste parts of recordings and, if required, add effects like echo, amplification and noise reduction. WavePad is a wav editor and MP3 editor, and supports a number of other file formats including vox, gsm, Real Audio, au, aif, flac, ogg and more.
Download for Free here (uninstall and reinstall when the ads become unbearable):
http://www.nch.com.au/wavepad/masters.html
http://www.nch.com.au/wavepad/masters.html
Sound Forge
The award-winning Sound Forge® digital audio editor includes a powerful set of audio processes, tools, and effects for manipulating audio. Sound Forge software allows you to edit, record, encode, and master nearly any form of digital audio including WAV, AIFF, MP3, and more. Whether you're taking your first steps towards editing audio on your PC, or you are a seasoned audio engineer, there's a Sound Forge product that's right for you.
Cubase
Great technology at a great price: that's Cubase SE. Based on Steinberg's renowned Cubase SX, Cubase SE is ideal for anyone who keeps a sharp eye on their finances but doesn't want to do without professional technologies in their home recording, project or pre-production studios.
GarageBand
Every Mac comes with GarageBand recording software pre-installed on your computer. GarageBand lets you easily perform, record and create your own music. Whether you're an experienced or aspiring musician. Or just want to feel and sound like a rock star. With the new version of GarageBand, you can even record multiple tracks at the same time.
ProTools not free
ProTools ProTools offers HD for professional grade studios, and also provides LE editions. Pro Tools LE and M-Powered Systems With options to suit any budget, Digidesign® Pro Tools® LE and Pro Tools M-Powered"" systems offer everything you need to create and produce music with professional results. Whether you're looking for an all-in-one audio/MIDI solution with an integrated control surface or simply a highly portable Pro Tools system, there's a powerful solution designed to satisfy your creative needs.
http://www.digidesign.comFree: fre:ac - free audio converter Audio converter and CD ripper for various formats - a little clunky but free and wery fast
fre:ac - free audio converter
fre:ac is a free audio converter and CD ripper for various formats and encoders. It features MP3, MP4/M4A, WMA, Ogg Vorbis, FLAC, AAC, and Bonk format support, integrates freedb/CDDB, CDText and ID3v2 tagging and is available in several languages.
fre:ac - free audio converter Web Site 
Audio Conversion Programs (optional) iTunes for the Mac and PC
If your audio recording program only exports a WAV file, you will need an audio conversion program. The easiest way to convert files into an MP3 is using iTunes.
