It appears that Jean-Baptiste Kempf (VideoLan) is pushing for access to the details necessary to be released to VideoLan so that the VLC player can play BDs ...... on the basis that not to do so is contrary to interoperability.
I only have this link so far ..... but if anyone has something better please post .....http://www.pcinpact.com/news/77459-vlc-hadopi-et-drm-sans-clefs-quelle-interoperabilite.htm
Update: There is a bit of confusion out there (both us and readers) about the playback of commercial or encrypted Blu-ray disks by VLC 2.0. I talked with Jean-Baptiste Kempf, one of the developers at VideoLan. He says both Lion and Snow Leopard can play unencrypted Blu-rays, but for legal reasons VLC can not ship the 2 libraries and the keys needed to play the encrypted discs. He says that users will have to locate them on their own, and if present, VLC will play the discs. Of course, if you have the software to rip the discs, VLC will play them directly off your Mac.http://www.tuaw.com/2012/02/13/vlc-to-get-complete-rewrite-and-blu-ray-playback/
Instructions for adding the necessary files to play encrypted BDs in Linuxhttp://vlc-bluray.whoknowsmy.name/