To start working in Audacity, you must open a project. By default, when you open Audacity for the very first time, it is a new project—and the screen looks noticeably blank. But before we start jumping into the details of project creation, it is important to understand what a project is.
A project is not the end-product or output from Audacity. It is actually a working draft of all of the work that you have done on the collection of files that you imported and used in the creation of a final file.
Project files, when saved in Audacity, are AUP files. AUP is the default file format when you choose File and then Save Project from the main menu.
A project encompasses all of the clips and files that you have already imported ...