Set the Plays ("Play Count" before iTunes v9.2) of the selected tracks to a user-entered number (they will all be set to the same number). If this number is 0 then the Last Played date of each track will be erased. (iTunes has the ability to "Reset" Plays to 0 from a track's Info window.)
iCloud Music Library users should beware of a potential bug.
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Check scripts downloaded to your computer from dougscripts.com for latest version
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Perform tasks on a batch of playlists; rename, delete, duplicate, merge, more
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Removes leading and trailing space characters from chosen tags in selected tracks
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Append user-entered text to beginning or ending of selected tag of each selected track