Is anybody out there recording straight into their Macbook Pro's optical SPDIF? Is it possible to hook up a system that goes: preamp ---> A/D/A ---> Macbook Pro optical SPDIF? If so, what are the drawbacks to this? Are there any quality issues? Would I be better off with a two-channel firewire system? If this works, I am considering picking up a DAV BG-1 preamp and Mytek AD96 converter and running it straight into my laptop. I am just looking to set up a high quality 2-channel recording system. Any thoughts, advice, tips, would be much appreciated.