I probably wouldn't just start over since the information is digital. Using the MD8 as an example it has MMC and MIDI already so it would be easier to sync it to another digital system. The MD8 has 8 analog outputs for each individual track so since its analog at the point you can direct out to the inputs of your Mac console and onto ADAT onto a group of 4 or at least a stereo. This is especially nice if you used something like the SR16 because you can laydown new drum tracks at the sametime same with MIDI keyboards. So you get new drums and at least a stereo scratch to start off with. Since the outputs on the MD8 are analog you don't suffer the added noise an up-conversion sampling would cause going from 16 to 20 or 24 bit. This is actually the reason I bought the MD8, it gave me what I needed as a writing tool, if I write something that sucks (never) then it stays on a disk verses an ADAT, if its good material I can move it with the above process to a number of systems including 2 inch analog. The owner of the studio I used to work for were looking for something simple and less cumbersome as a writing tool and easily transferable to his equipment. When I was actually recording my own stuff at his studio I hated paying for rewind time when trying out a different solo or any new idea, with the MD8 I work it all out and keep track sheets on effects eq's and fader info to minimize the waste that can happen in a studio, even the owner thought about getting one for his own use when on business trips or at home, his studio is in a business park. Bruce is entirely correct in his thoughts on the MD8 being used for commercial ventures. Even if you put aside the ATRAC issue for a moment, the MD8 lacks the flexibility a larger console has, as well as the number of inputs, tracks and channels used in "pro" facilities. I have even run out of room on a 24 track, big drum sets...6 tracks+safety, vocal... 6 tracks+safety, bass... 3 tracks, guitar.... 2 to 4 tracks usually 4 to 8 really, keys....3 tracks..were done, want something other than that..sorry...
P.S. Bruce, if you ever come to Seattle you need to set up an appointment to tour Bad Aminals Studio
Peace,
Dennis