Hello, my Myst Masterpiece will play but no sound. I am using an Ati 5770 videocard outputing thru HDMI. I am also using Win 7 64bit. Before I changed the compatibility settings it was just going to the book with no videos. I need sound. Please help, thanks alot.

On Vista 64 bit, the game will run fine under the following settings for compatability:
Compatability Mode for XP (Service Pack 2)
Disable Visual Themes
Run this program as an administrator
There seem to be more problems with running Myst Masterpiece in Windows 7 than there are with running it on an older OS, but I figured it might be worth a try to use these settings if nothing else appears to work. This got the videos to play for me when they refused to, although I never had an issue with the sound whatsoever.