Hide Audio File Details

Hide all of the region information about the audio files listed in the Project Audio window. This can be accomplished by option-clicking on the disclosure arrow at the left of any file in the list.

Logic Pro Project Audio Browser interface — Apple Support

The Project Audio Browser shows the audio files used in the project, and displays an overview of the regions derived from each audio file. You can add, edit, delete, and rename audio files and regions in the Project Audio Browser.