Get Info and QuickLook Audition
Get Info Panel
Right-click or Control-click on a track in the Track List to display its Get Info panel:
Clicking "Use This Artwork for Final File" will copy this track's artwork to the Artwork well to be used as the artwork for the final joined file.
The source track or file can be revealed in the Music app/iTunes or the Finder, respectively, by clicking the appropriate button.
Remove the track from the list (also see Delete Tracks").
Click anywhere outside the Get Info panel to dismiss it.
QuickLook
Select a track (or tracks) in the Track List and press the Space Bar to display a QuickLook panel that can play the selection. Press Space Bar again to dismiss the panel.