Saving
From Audacity Manual
To return later to your unfinished work in Audacity with all tracks and edits as you left them, save an Audacity project.
This is what the two main commands for saving projects do.To play your current work in other media programs or send it to others, export an audio file such as WAV or MP3.
saves an .aup project file and a _data folder containing the actual audio. To re-open a saved project, choose or and open the .aup file.
is for saving an empty project. It also lets you save an existing Project to a new name. This is the safest way to rename or make a copy of a project.
Read more about Audacity Projects.
Back to Getting Started.