i sold all the dat multis i had a couple of years ago. i really have to be honest and say i regret it now.
dont get me wrong there is a lot to be said about working with a program like cubase and being able to treat audio in a totally flexible manner.
this being said i miss the good audio converters of a adat machine i also miss working in that manner.
while i dont think i would ever go back to the old way of multitracking for sure it was pretty good.
i think that you might be stuck with playing those recordings into your computer.
if your adat has a optical out you might be able to find a audio interface with that kind of input allthough even those would appear to be getting hard to find now.