If MLP Decoding IS an option, I'd like to know exactly how one gets that option.
To be clear, I have found that the trial version of PowerDVD 10 DOES play home made DVD-Audio discs (which are not MLP encoded) but won't play commercial DVD-Audio (which is MLP encoded).
Regarding the other poster showing MLP enabled ... maybe he previously had version 8 (which evidently supported MLP) and in their later version it shared that MLP decoding dll? just a guess.
Or perhaps versions targetted at different regions include the MLP option?