Compacting audio files and regions can be an effective way to maximize your storage capabilities, however, it is a DESTRUCTIVE process and CANNOT BE UNDONE.When Compacting, you will permanently alter the orignal "parent"* audio files, that are referenced by the regions residing within the session. The portions of audio files referenced by the audio regions removed from your session, will be deleted, thus consolidating (compacting) the "parent" audio files to only contain the audio actually used in the session. The Padding setting allows you set an amount of extra audio at the beginning and end of each region's boundaries.This is a process normally done near or at the end of all work on the session.Follow steps on page 197 to Compact the selected audio files.