I WILL play in the preview window if you press STOP on the remote and then PLAY. Also, I believe there is an option in the dropdown box if you press the arrow beside the "preview" button.
Strange problem just now though, preview
would not advance on any menu or video.
i.e.
Looped postition nor Elapsed time would
progress forward, they were stuck on
00:00 for any video.
This was for both the introductory video
AND video events on a menu. Menu navigation
would work, and switch to the first frame
of video, but would not progress forward
and play video.
Closing DVD-A, creating new project seemed
to fix problem.
Seems to be some sort of transient bug
in the preview.
On the last issue, I just import my intro video mpeg, and then import the same file again in the audio section and it works just fine. It's not necessary to make 2 seperate files. It is odd that you have to import them seperately. But I guess it adds more flexibility, which is always a good thing.