ID3 Tag von Mp3s auslesen?

tell application "iTunes"
	
	set sel to selection
	set trenn to " - "
	
	
	if sel is {} then
		-- Fehlermeldung, wenn keine Tracks aktiviert sind
		display dialog "Die gewünschten Files auswählen!" with title "Meldung" buttons {"OK"} default button 1 with icon 1
	else
		-- sucht und verändert die Covernamen
		with timeout of 30000 seconds
			repeat with naechterTrack in sel
				
				
				set tagNr to track number of naechterTrack as string
				set tagArtist to artist of naechterTrack as text
				set tagName to name of naechterTrack as string
				set tagAlbum to album of naechterTrack as string
				
				try
					set schreibeString to tagNr & trenn & tagArtist & trenn & tagName & trenn & tagAlbum
				end try
				
				set refDatei to (((path to desktop) as string) & "ID3-Info.txt") as file specification
				try
					open for access refDatei with write permission
					write schreibeString & return to refDatei starting at eof
					close access refDatei
				on error
					try
						close access refDatei
					end try
				end try
				
				
			end repeat
		end timeout
	end if
end tell