i've been using macs to make music for a long time now, but i've been doing all of my tracking using an adat. my adat broke recently and i'm in the market for a new computer, too. i used optical i/o to interface between my mixer and adat. will i be able to plug the mixer right into a g5 as if it were an adat, or do i need a separate sound card for that? sorry if this seems like a stupid question, i just can't get a straight answer anywhere.