Audio File Editor preferences are only available when Additional Audio Options is selected in Advanced preferences.
“Warning before processing function by key command” checkbox: Provides a warning before carrying out a destructive edit in the Audio File Editor when you use a keyboard shortcut. This gives you the opportunity to cancel the edit before altering the data.
“Clear Undo History when closing project” checkbox: Deletes the Undo History automatically when you close the project.
“Record selection changes in Undo History” checkbox: Select if you want to be able to undo and redo selection changes in the Audio File Editor.
“Record Normalize operations in Undo History” checkbox: Select if you want to be able to undo and redo Normalize function changes in the Audio File Editor.
Number of Undo Steps slider: Determines the maximum number of undo steps that are retained.
External Sample Editor chooser and Remove button: Lets you choose an external application for sample editing tasks. Click the Remove button to clear the External Sample Editor.