Thanks -- I tried that. I started ripping a dvd, then put the blu-ray into the drive and started ripping it. DVDFat displayed all the files on the blu-ray disk but now it seems to be stuck trying to read the blu-ray disk (the big blue progress bar just keeps going, and going like the energizer bunny)
[edit]I just canceled that progress bar and now it seems to be ripping both at the same time ok.