Audacity
Audacity is free, open source software for recording and editing sounds. It is available for Mac OS X, Microsoft Windows, GNU/Linux, and other operating systems.
Mixcraft
Mixcraft™ is an affordable multi-track audio and MIDI recording studio that enables you to compose original music, record your band, create a podcast, or remix a song. Use it as a multi-track recorder or as a music loop remix program.
