content: -- Copyright (c) 2018 Dave Diamond
  tell application "iTunes"
  	repeat with atrack in tracks of library playlist 1
  		if kind of atrack = "MPEG audio file" then
  			set n1 to name of atrack as text
  			set dd to text 1 thru 2 of n1
  			set tt to text 4 thru 5 of n1
  			try
  				set d to dd as number
  				set t to tt as number
  				set prefix to dd & "-" & tt & "- "
  				if n1 starts with prefix then
  					set n2 to text ((length of prefix) + 1) thru -1 of n1
  					if disc number of atrack = 0 then
  						set disc number of atrack to d
  					end if
  					if track number of atrack = 0 then
  						set track number of atrack to t
  					end if
  					set name of atrack to n2
  					log n2
  				end if
  			end try
  		end if
  	end repeat
  end tell
  