content: tell application "System Events"
  	if (name of processes) contains "iTunes" then
  		set iTunesRunning to true
  	else
  		set iTunesRunning to false
  	end if
  end tell
  
  if iTunesRunning then
  	tell application "iTunes"
  		set rating of current track to {0} * 20
  	end tell
  end if