Using the most recent version of Adobe Audition for the Mac...
I'm recording 2 people on my end, but also need to be able to record a third person that is in another city at the same time. They all need to be able to hear each other and I need a decent recording. I've got great mics on this end and I'm using Adobe Audition to record onto a Mac. The remote person has a good USB mic but I am not sure how to get his audio in and a monitor of everything back out to him. Any ideas?
Not a simple as it sounds...
The first thing to consider is how you're getting the voice from the other city into your system? Regular phone? Skype? Specialist IP transmission device? Skype (or similar) might be easier but not up to the full quality you'll get locally.
Second, you have to consider what's fed where. The remote voice will wish to hear the two people local to you but NOT his own voice returning with heavy lag. In a professional situation, you'd also have a facility to over ride the programme audio for a director (you?) to give direction and countdowns etc.
I know there are specialist pieces of podcasting software that can do some or all of this on a single computer (though with varying degrees of success from what I gather). However, depending on the resources available, if it was me, I'd use 2 computers (and a third at the remote end), a headphone amp and a small mixer with at least one pre fade aux.
I'd use one computer to set up a Skype connection with the remote end, feeding the line out into one channel of the mixer. I'd feed the two local mics into two other channels of the mixer and the main output(s) of the mixer into your Mac for recording. Up to you (and what you have) whether you keep each voice in a separate track or maybe just pan the local mics to one side and the remote to the other to keep the two locations separate.
I'd use the pre fade aux to feed to the remote location, turning up the two local mics but NOT his own voice. If necessary (and it usually is) I'd set up a third basic mic into the pre fade aux so I could talk to the far end as required.
Anyhow, that's how I'd do it.
The other alternative is to record the local end only and use a normal phone/mobile for communication whilst you do the interview and get the remote contributor to record his end of the converstion at his end. He can then send you his audio file (even mp3 will probably be better than phone line quality) via the internet for you to edit together with your local recording.