--iTunes talks to growl (pre-alpha) ;)
--register notification with growl (only needed one time)

tell application "GrowlHelperApp"
    register as application "iTunesNotify" all notifications {"iTunesTrackNotify"} default notifications {"iTunesTrackNotify"} icon of application "itunes.app"
end tell

--let iTunes send notifications
tell application "iTunes"
    set iTunesNotifiedID to -1
    repeat
        try
            --send current track name and album to prowl
            if player state = playing then
                if database ID of current track is not equal to iTunesNotifiedID then
                    set iTunesTitle to name of current track as text
                    set iTunesAlbum to album of current track as text
                    tell application "GrowlHelperApp"
                        notify with name "iTunesTrackNotify" title iTunesTitle description iTunesAlbum application name "iTunesNotify"
                    end tell
                    set iTunesNotifiedID to database ID of current track
                end if
                delay 1
            end if
            --other notifications go here
        on error number -609
            --exit the loop when the user quits iTunes
            exit repeat
        end try
    end repeat
end tell