The problem is not Adobe Air. Air can be installed just fine either natively (Linux version) or under wine (Windows version) or even both can coexist. The library palette is a flash file and it isn't being loaded. By right-clicking the palette area I can read that Adobe Flash Player 10 is being used and I get a single infotext "Movie is not loaded".

Oh well. Back to P7 then unless someone either figures out why the palette movie is not playing or finds a tweak with which one could use P7 library palette if that still exists in the code base or is even at all possible.