Hey guboogi, that could be tricky. iTunes doesn’t send out a notification when a song is done playing– it sends one out to our program only when a new song starts playing. At that point, it’s not possible to tell if the last song was skipped or if it finished.
One option that might be possible is to wait 20 seconds before posting the song. If a new song is played before the 20 seconds are up, we don’t post the song. Otherwise, we do.