somewhat off-topic, but from reading those links - seems the simplest answer is to buy a DVD-A stand-aloneplayer that ignores watermarking protections ( one of the links has a list) & then just clone your DVD-A discs, Let the over-zealous protection fade & die ( like macrovision did).
As for me. I'm happy with CD quality - grew up with vinyl on mono LP players & never could hear the difference between 16 bit CD quality & 24 bit DVD-A quality anyway.
Always seemed strange to me that guitar players spend so much of their time trying for a good, distorted valve driven analogue sound, then we obsess about reproducing it digitally!
Anyway, 320k FBR or 192k VBR MP3 works for me & it's hassle free, the shiny round things live in the cupboard, next to the DVDs