alistairphillips.com

This AppleScript will iterate over all selected tracks in iTunes and play them for 0.01 of a second which has been helpful to force iTunes to update track information. Weird that there is no built in option to do this.

tell application "iTunes"
    set sel to selection
    repeat with aTrack in sel
        tell aTrack
            play
            delay 0.01
        end tell
    end repeat
end tell

And to enabled 1/2 star ratings in iTunes you'd enter the following into Terminal (although how one uses this in Smart Playlists I don't know...)

defaults write com.apple.iTunes allow-half-stars -bool TRUE

• Find tracks without album artwork using this AppleScript
• GimmeSomeTune an iTunes enhancer application, helps you improve your music library by automatically searching for cover artworks and lyrics.