Voice Changing Software?

I use Audacity ( Free)

You can record with it, edit, mix tracks, and add sound effects. See video demos on YouTube listed below.

You can use it to record songs off of internet radio and then save them to a CD. You can also use it to transfer vinyl records and cassettes to a CD. There are many other features and uses

http://audacity.sourceforge.net/download/

http://audacity.sourceforge.net/about/features

http://audacity.sourceforge.net/about/

http://audacity.sourceforge.net/help/documentation

Video: Installing Audacity and Lame Encoder and basic uses

http://www.youtube.com/watch?v=AcWuFBYHkow

Video: 3 uses for audacity - free audio editing application

http://www.youtube.com/watch?v=XFKlRWAF9-U

Video : Mixing

http://www.youtube.com/watch?v=M1IqWoWu8gU

Video Demo's

http://www.youtube.com/results?search_query=audaci...

How do I download and install the LAME MP3 encoder?

http://audacity.sourceforge.net/help/faq?s=install...

http://www.cassette2cd.co.uk/soft/lame_enc.dll

A file needed by Audacity to export recordings from Audacity to MP3 format. Save this on your hard-drive, then browse to it from Audacity when prompted.

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Record Music from a Cassette Tape to Your Computer

http://www.microsoft.com/windows/windowsmedia/know...

Record Music from a Vinyl Record to Your Computer

http://www.microsoft.com/windows/windowsmedia/know...

Connect your Media Center PC to your surround sound system

http://www.microsoft.com/windowsxp/mediacenter/usi...

How to connect your computer to your stereo

http://www.ramelectronics.net/html/howto-pc-audio....

http://www.teamcombooks.com/mp3handbook/10.htm

Diagrams of connections

http://www.real-knowledge.com/soundbl.htm

http://www.microsoft.com/windowsxp/mediacenter/usi...

Cables Unlimited (computer to stereo or tape deck)

http://cablesunlimited.resultspage.com/search?p=Q&...

Audio Cables/ adapters :

http://cablesunlimited.resultspage.com/search?p=Q&...

http://www.ramelectronics.net/html/howto-pc-audio....

You could use MorphVOX Pro. If you buy it I'm not sure how much it costs but it is definitely not expensive. But I agree with Merry. You should use Voice Changer instead. It has a lot more features and is just plain more fun. Good Luck