copy of baal

Hi everyone. The Film has been around for 2 years now and there's no DVD at Amazon.
I even checked with the initial sponsors, the ZDF theaterkanal Germany.
They weren't able to provide a copy of the film (although they usually do for everything they produce).

I'm a real but fan of the book and I'd love to see it on the screen.
Has anybody got a hint for me?
If you do, please send me a PM or so.. =)
THanks in advance for any hints!°