Hi, I installed CS5 Master parallel to my CS4 Master installation on a Windows 7 (64-bit) system. I opened a new HD422 project and imported HD422 1080i50 footage. If I play back the clips on the timeline or through the monitor I can't hear any sound. There is just a faint noise. If I import an EX3 clip the sound works fine. Does anybody has this problem, too?
I also have the Matrox Axio LE card installed with my CS4. According to reports from users they were able to install CS5 parallel and it didn't break their AXIO funtionality. In my case the importer process is crashing, when I'm opening Premiere CS4. I thought this should work fine. I don't know if this issue has any influence on my HD422 playback.
You can import the audio tracks manually. You can find them in the same folder as the video mxf-file. While the video file is named "***V01.mxf" the audio files are named "***A01.mxf" up to "***A08.mxf" = 8 mono audio tracks. Hope this helps! Unfortunately HD 422 seems not to be fully supported, yet. No timecode, either. I'm fighting with this, too...
There have been several reports of Audio issues with Matrox cards. Going back to the CS4.2 days, Matrox issued an updated driver that got the Audio issues sorted out for many, if not all. That would be the first place that I would look.