Importing audio tracks from media assets
From Adobe Audition, you can import individual audio tracks from a media asset without importing the full video.
To do this:
From the Adobe panel, with a single media asset selected, open the Import menu and select Audio tracks.

A dialog will appear allowing you to select tracks to import (if available).

From here, select one or more audio tracks from the list.Once you have selected, click Import to import your selected tracks.