> There seems to be quite an emphasis on low latency in this discussion. When recording, the issue of latency can be side stepped by monitoring direct from the mixing desk or microphone preamp, or if your interface permits, low latency monitoring from its internal hardware.
Yes, it can be done that way, but if you *do* have low latency it can be easier to do it all in ardour's mixer. I would set up an ardour channel for each set of headphones and send a different mix depending what the person wanted (e.g. a bassist and vocalist may want to have different instruments emphasized).