Extended soundtrack on Collector's Edition

[Dreaming Of Pandora]

This is old news that the entire soundtrack for Avatar wasn't released on the OST CD and I was meaning to say something about it around ten months ago (!). I've been watching the special features on the Collector's Edition and have noticed parts of the OST that I haven't heard before in the movie. Anyone else notice too?

I also signed a petition (I think) for the entire soundtrack to be released (think it was Woodsprite's idea) but then not really understanding what it was about.

If this is true, that there is more to the soundtrack than what is released, where can you find it?