Quote Originally Posted by Sir Terrence the Terrible
DD and Dts is a part of the bluray spec, so yes DRM is enforceable. It sits behind behind HTCP, BD+ and BD watermark. Royalties are built in to the pricing structure already. The use of all of the new audio codecs(and the old ones too) actually allow for more choices in how to listen to bluray music.

DSD is not a lossless compression format. It is just plain lossless.
I'll be watching with interest but it will be while before it will have any practical relevance to me. (I wonder if there will ever be 2-channel only BluRay players at some point, just like the 2-ch SACD players that predominate in the high-end market?)

As for SACD using lossless compression, I know that DSD has nothing to do with compression but I understand that SACD discs typically use compression -- see SACD Wikipedia item.