Trying to build an audio mixer for a ham radio setup.

My goal is as follows:

I want to take audio from the radio, bring it into the pi, and send it to various outputs (one for speaker, headset a, headset b....)

Then, I want to take mic audio from the 'selected' device, back to the radio.

Furthermore, I want to take mic audio from headset a and headset b, and pass them directly to each other (as an intercom) while they still hear the radio audio.

I am hoping to use the Octo for this.

Would this be possible? What might I need for software to do this? Is it possible there is a better solution?

I assume I am going to need some sort of amplification for the speakers/headphone outputs?

Open to suggestions!

Mike

K2GC