You've just contradicted yourself by saying that Sad Sad World appeared one exclusive copies of the Austrailian Edition and then said they've never been released. A song is considered released if it appears anywhere in the world, so technically giving it out, would be illegal.
After hearing it though, it's sounds more of B-side to a single really and knowing what the album sounds like without it, there's no really great loss. And what's to say that the tracks that haven't been released AS YET, might make an appearance on album number 2.
Huggles
Vhari x