There seems to be a lot of confusion here. From February 1, 2012, all blu-ray players are required to implement Cinavia protection. This only applies to LICENSED players, which includes PowerDVD and TMT5. Unlicensed players like XBMC, JRiver, WMC, etc., WILL NOT be affected by Cinavia. If you are using an unlicensed player, you have nothing to worry about. This is not a trivial issue though, as a lot of people use PowerDVD and TMT5. Currently the only way to access BD-J menus on a PC is to use a licensed player, and I believe licensed players are the only way to play 3D blu-rays. Plus, some people just like having the menus.
Cinavia also doesn't make it more difficult to rip the blu-ray. The issue arises during playback of the ripped blu-ray There is currently no way of defeating Cinavia as far as I know, although the makers of DVD Ranger claim to be releasing a solution today. It sounds like they've found a way to disrupt the audio watermark during the ripping process.
Edited by lockdown571 - 10/31/12 at 10:05am