Slide 7 of 7. Side A of the original multi-disc set has been selected and is playing, as indicated by the control at bottom. The researcher also clicked the right button on the mouse for the element selected from the tree, bringing forth the administrative metadata, in this case for the audio file that reproduces side A. (Right clicks at any level offer access to the metadata of interest at that point in the tree.) Meanwhile, the image of the label for side A (previously selected) is displayed.