AppleScript to play playlist starting at certain track not functioning as expected...

Question

I'm trying to write an AppleScript that scans a playlist called "iMac Shuffle" and finds the last song that was played in the playlist by comparing the last played date of the next track to see if it is less than the current track, in which case play that track. This is my code so far:
tell application "iTunes"
     set i to 1
     repeat while played date of track i in playlist "iMac Shuffle" < played date of track (i + 1) in playlist "iMac Shuffle"
          set i to (i + 1)
     end repeat
     reveal track (i + 1) in playlist "iMac Shuffle"
     play track (i + 1) in playlist "iMac Shuffle"
end tell
It finds the correct track and begins playing, but when the track ends, it always seems to skip to the song after the last tracked I manually started playing.
For example, I manually played track 3 but paused it halfway through. I ran my script and track 6 started playing, which is correct according to the last played date, so all is well. However, when track 6 ends, instead of track 7 playing, track 4 begins.
This is incredibly frustrating. Does anyone know why this is happening?

Answer 1

This is, I think, the expected behavior. If itunes is playing a playlist, and applescript interrupts to play a different song, then next track ought to send it back to the next track in the playlist before the interruption, not the next track after the interruption. The workaround is not to use the next track command, but specify tracks directly.  i.e.:
tell application "iTunes"
          set t to (get selection)
          repeat with i from 1 to 5
                    play item i of t
                    repeat until player position > 3
                              delay 1
                    end repeat
          end repeat
  stop
end tell