Documentation:Audio Editing Tools

Open Source/Free Audio Editing Tools

• Audacity: Cross platform service.
  

Click the link for a free download and tutorial: http://trusoundcamp.net/how-to/edit-sound-files/

• Linux Multimedia Studio (LMMS):available for Windows, Mac OS X & Linux. https://lmms.io/
• A list of 25 free audio editors: http://www.hongkiat.com/blog/25-free-digital-audio-editors/