Audacity is a free, open source audio editor and can be downloaded directly from their website. It is compatible with Windows, Mac, and Linux operating systems.
To download Audacity, please click here to visit their website or go to audacityteam.org/download. Click on the blue link for your operating system, and your download should begin automatically. Open the file when it's finished downloading, and follow the on-screen prompts to install the software.