I know. That's why I asked Andy to include reading a recording file, but because of the 5-minute delay, it's not that useful. Of course, v2.1 will make port 30003 less useful as well :(
What I do with military aircraft is still use port 30003, and manually type the military squawk codes into the "Look up a squawk code" box.
I just wish Airnav would include squawk code lookup in Radarbox!! It's obviously a useful feature, given how popular Andy's Squawkbox is.