Audio files are displayed and organized by Mac OS X in exactly the same way as all other Mac files. You can therefore delete or copy them in the Finder. This has the following disadvantages, however:
You may not know if an audio file is needed in a project when using the Finder for deletions.
Deleted audio files cannot be found when you load a project. This results in orphaned files (and regions) in the Audio Bin and Arrange area regions which refer to the missing audio file (see Finding and Replacing Orphaned Audio Files).
Important: For these reasons, you should only perform audio file deletions in the Audio Bin.
Select the audio files that you want to delete.
Choose Audio File > Delete File(s) (or use the corresponding key command, default assignment: Control-Delete).
An alert message, informing you of the number of audio files about to be deleted, appears.
Click Cancel to abandon the deletion process, or click Delete to move the audio files into the Trash.