This script will set the bookmarked playback pointer of the selected tracks (established when a track is set to "Remember playback position") to 0 seconds, effectively clearing the bookmark.
Perhaps Also of Interest...
downloaded 5m 9s ago
Apply selected CD's CD Text to its disc and track tags
downloaded 39m 54s ago
Export selected playlists as individual XML or M3U files
downloaded 46m 11s ago
Sort purchased tracks into discrete playlists by name or Apple ID
downloaded 48m 49s ago
Two scripts copy text from clipboard to current or single selected track's lyrics tag
downloaded 1h 7m 15s ago
Displays the Spotlight meta-data for a selected track in Text Edit
downloaded 1h 12m 50s ago
Re-associate batch of dead tracks with files from selected folder