I stumbled upon on this tool and thought it would be worth sharing with people who create their own audios and videos for business. It is an open source user-friendly tool with enormous features to broadcast your podcast. Audacity helps you to create ringtones, transfer, upload or edit audio files and recordings with ease.
You can even change the pitch and use effect settings to blend with your video tutorials. It works well with Windows 7, XP, Mac OS X, GNU Linux and Windows Vista. I downloaded the Audacity software and worked on few of the features and still need to explore more. Try it out and you would love it!