It seems JackAsio(wineasio mac) is no longer available, at least what I could find on the Internet now.
http://mailinglisps.blogspot.com/2012/03/jackosx-jackwasio-where-to-find-now.html
and
http://mailinglisps.blogspot.com/2012/03/jackosx-re-jackwasio-where-to-find-now.html
I know this is a major hurdle in getting FL Studio 10 fully compliant under crossover.
Any ideas, and I think the latest version may or may have not been LION COMPATIBLE.
With Mountain Lion out this summer, its doubtful we'll see much more from the ASIO Driver.
FYI