tell application "iTunes"
    set sel to selection
    if sel is {} then
        display dialog return & "No tracks are selected..." buttons {"Cancel"} default button 1 with icon 0 giving up after 15
        return
    else
        set selR to a reference to sel
        repeat with t from 1 to (length of sel)
            set thisTrack to item t of selR
            set albumName to (get thisTrack's album)
            if albumName starts with "200" then
                set thisTrack's album to (items 6 thru (length of albumName) of albumName as text)
            end if
        end repeat
    end if
end tell