OS X 10.8 or later. Assists with segregating iTunes Match tracks that appear to get cut-off when played (due to a possible bug, described here). Then these truncated tracks can be deleted and re-downloaded intact (by you, not the script).
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Applet assists with swapping, copying, appending data between track tags
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Sort purchased tracks into discrete playlists by name or Apple ID
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Export album-artist pairs to tabbed file
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Use tag data to formulate new file name for selected tracks' files