I seem to be confused about something basic - does software like Cubase SL along with an interface preclude the need for a mixer if I'm just laying down a track or two at a time? I can see going through a mixer just for the preamp and eq on the channel strip (and maybe an outboard effect or two). But other than that, why bother? With a band, I can see the reasoning - mix all the ins and send them via the stereo outs to the two ins on the interface and record. But then again, in so doing, the mix becomes fixed as it goes to disc, and it's only as good as it was when it was recorded. So what gives? What am I missing?