The Phantom Key: The Strange History of the Adobe Audition 3.0 Serial Number
If you still have your original purchase materials, check these locations: Serial Number Adobe Audition 3 0
If you don't already have the "non-activation" installer and its specific universal serial number saved on a backup drive, your options are extremely limited: Adobe Audition 3.0 | Community The Phantom Key: The Strange History of the Adobe Audition 3