5. The system of claim 1 , comprising using a graphical user interface (GUI) that displays the rendered composite image of a track and using buttons and keyboard shortcuts for labeling of the track and advancing to the next track to label with a single mouse-click or keystroke.
5. The system of claim 1 , comprising using a graphical user interface (GUI) that displays the rendered composite image of a track and using buttons and keyboard shortcuts for labeling of the track and advancing to the next track to label with a single mouse-click or keystroke. 6. The system of claim 5 where the GUI further comprises a button or keyboard shortcut to go back to the previous track to correct for a labeling mistake.