It gets better: the decoder does not downsample (at least not with my 5770). 96/24 TrueHD connected to the renderer at 96/24. Unfortunately, I could only get sound using the Directsound renderer (which gets run through the mixer), I could not get sound when connected to the WaveOut renderer.
As for the registry settings:
- Export the folowing registry key ("notice the double PowerDVD9"):
- Edit the key in the .reg file to point to (Changing "[exe name]" of course:
- Save and import the reg file.
GraphStudio for example would be: