I am trying to set up Audacity for remote interviews for my podcast. I do interviews via Zoom. I have an XLR mic with Scarlette 2i2 USB interface. Ideally, I want my track to be recorded on Audacity from the mike and the guest’s track to be fed into Audacity from Zoom. I can also take the guest’s track from Zoom recording and try to sync with mine. However, I can’t make it work. Audacity doesn’t record anything complaining about the sample rate. I wonder what is the best way to set it up?
Are you really using Linux? (your profile says macOS)
Regarding your question, see my reply to a very similar question here: https://forum.audacityteam.org/t/recording-a-podcast-beginners-questions/59046/1
There’s nothing easy about this. This is a note from Zoom Communications Help Center.
Note: Cloud recordings generally take about 2 times the meeting duration to process. Due to unusually high volume during the COVID-19 pandemic, cloud recordings may require extra processing time that may take up to 24 to 72 hours.
So come back in three days.
Audacity will only record from one “thing.” You can record your microphone but not your microphone and… There is no “and” without fancy routing software and fancy routing software tends to not get along with Zoom—who takes over the machine—and you can’t stop it.
Googling this runs into both Zooms. One makes communications software and the other makes terrific sound recorders.
Oddly, there is a way to force this to work with both Zooms:
Run a second internet-connected computer and sign into the Zoom call as a second person. Since it has nothing to do with the first computer, it has the whole conference sound mix on it, you included.
Use cable adapters to plug the second computer headphone connection into Line-In of the Zoom recorder of your choice. You can’t run Audacity on the second computer because again, Zoom and Audacity don’t get along. Plug your headphones into the Zoom recorder headphone connection to make sure everything is OK. Wired headphones are good because not everything supports wireless BlueTooth connections.
We got another forum poster out of trouble with this trick.
Koz
Note the the second computer can’t have a working microphone. Either mute the Zoom microphone service or plug in an empty cable to the Mic-In socket. Some combination to get rid of that microphone. The second computer “subscriber” will never say anything in the meeting.
Koz
We also note this solution is app agnostic. Skype, Zoom, Hangouts, Go To Meeting, etc. All work.
Koz
Not sure, why it shows macOS, it’s Ubuntu 20.10 
I was hoping that Linux provides more flexibility.
Not sure I understand the setup. I guess the benefit is that my track will be recorded on Zoom recorder rather than on Zoom. Still, it won’t be as good as from a mike to Audacity.
Recording both sides of the conference is only “easy” if you use the Zoom on-line tools and services. Then it’s just push a button. The problem is Zoom’s popularity. They have to do some processing to get the conference recording to you and that could take up to three days.
I didn’t realize it was that bad, but I’m not shocked, either. Every news program on the surface of the earth is Zooming and communications companies just can’t get bigger that fast.
I know of no way to record both sides of a conference on one machine. Most of the time it’s rough to just record the far side.
That’s where the second computer comes in. You set it up as a separate subscriber to the conference and then mute the microphone. The headphone feed on this computer will include everybody on the conference, mixed. Plug a computer headphone adapter cable into a Zoom (or other) recorder and press record. Make sure the loudnesses are OK.
We used to do something very similar on movie production meetings. There was a computer in Electronic Maintenance who did nothing all day but record conferences. Because it was a separate computer, it got everybody on the recording.
Fair warning there was talk of one system where someone did manage to record everything on a conference computer. They screwed up the conference sound balances so much the software crashed the conference briefly and woke up with the recording disconnected.
They’re not fooling around. The reason that separate computer thing works so well and reliably is Zoom can’t tell the recording is there.
Koz
Thanks for the clarification. I’ve changed that for you.