Hi Iíve installed the x64 version of Win 7 (build 7100) and im having a nightmare with the sound. I have a CMI7868+ and have installed the latest Windows 7 drivers (HDA Mystique) but all I get from the card is 2 channel stereo, even with Dolby digital live enabled. Which the amp confirms is running in DD mode, but also shows only 2 channels transmitting. Having checked as much as I can so far, with 5.1 gaming, SPDIF passthru with power DVD I still come up with the same result..
I seem to have found the cause while trying to sort another problem.
hsmgr.exe was stopping all applications from running, and once I worked that out, I decided to check ddlive and it was working as it should.