I also have no sound in PowerDVD 10 Ultra Mark II latest patch when playing dvd's in cinema mode, It works fine in normal mode but not in cinema mode and it does not matter if i launch it from MCE with remote or go to cinema mode while in normal mode,
I have a Custom built pc i built myself, I have all latest drivers and the latest bios for my mobo, I also have the latest windows updates, Im running this on a 2 speaker analog setup, like the other guy said PowerDVD says Audio: Dolby Digital 5.1 0Kbps, Sounds like to me the decoder isn't working! I know a little bit about computers and i'm definitely not stupid by any means and i would call myself fairly advanced at computers but yet i still have not found a solution to this annoying problem, i have only tried for a few hours and came across this thread while searching the internet for a solution. IF you want any other details let me know, I also have another similar pc i built i can test this on but it is a similar setup.
OS - Windows 7 Ultimate 64-bit
Security: Norton NIS 2010
My hardware is
Motherboard - Biostar TA790GX A2+
CPU - Phenom II X4 945 Deneb 3.0GHz 95W
Memory - G.SKILL 4GB DDR2 800 (Dual Channel)
Tuner - AVerMedia AVerTVHD Duet (A188 - White Box) pcie x1 card
Sound - Realtek ALC888 8+2 Channel HD Audio
Speakers - Standard analog stereo speakers Logitech brand
Graphics - XFX Radeon HD 4850 1GB 256-bit GDDR3 PCI Express 2.0 x16
Monitor - Acer H213H 1080p 21.5 inch Currently hooked through DVI
MCE Remote - AVS Gear MG-IR01BK