Mark,
I recorded these tutorials with Camtasia. This required a techsmith codec to play and I don't know for sure whether it can be used on a Mac. Here is their website.
http://www.techsmith.com/download/codecs.asp
I don't think there is a real interest in this although, Sony Vegas did add, I believe, the ability to burn HD to regular DVD's.
In order to make the BluRay folder created in Encore play on the PlayStation 3, you have to edit the file as I demonstrated on my tutorial.
You can always get a bluray burner and burn a bluray disk which in my case would play on my PS3 or Bluray players (I used the local Best Buy to check this). The only problem, is the cost of the blank disks and whether your clients have bluray players.
This thread (I didn't realize a year had gone by), summarized my experience then especially the last post.
http://www.wrigleyvideo.com/forum/index.php?showtopic=29665
I really just use my HDV or AVCHD video to downsize to wide screen SD since my clients don't have bluray players.
Let me know how it works out for you.
John Rich
JOHNR