Multitrack Editor - Audition
From Help Wiki
Intro
In the Multitrack Editor you can mix together multiple audio tracks to created layered compositions and soundscapes. The Multitrack Editor is non-destructive, meaning that you can always make changes to you project.
Make a New Session
- Multritrack sessions create a .sesx project file. This file contain no audio data. It just references the audio files that are used.
- Always keep all of the audio files and .sesx file in one folder.