• Audacity  is a free, easy-to-use, multi-track audio editor and recorder for Windows, Mac OS X, GNU/Linux, and other operating systems.
• Audacity  is a free, easy-to-use, multi-track audio editor and recorder for Windows, Mac OS X, GNU/Linux, and other operating systems. You can use Audacity to record live audio and cut, copy, splice or mix sounds together; numerous effects including changing the speed or pitch of a recording, and more.