I have been using Audacity to convert a big stack of cassette tapes to digital. It was working very well – I recorded many tapes!
Out of the blue, the USB option has vanished from the Devices > Recording dropdown menu.
I am using Mac 0.15.7, Audacity 3.0.2.
I tried changing the USB cord, changing the USB port, re-starting Audacity (many times), Transport>Rescan Audio Devices, putting new batteries in my cassette recorder. I even installed Audacity on a different computer, but am having the same problem there.
Once on my own computer and once on the other one, during the troubleshooting process, the USB option appeared briefly. I selected it, then got a different error message which in the past I was able to “solve” by re-starting Audacity (for some reason, when it WAS working, I’d get an error if I tried to record a second cassette during the same session. So after each session I would quit Audacity, re-open, and it would work fine). So I selected USB, got the error, quit and re-opened Audacity. When I re-opened, the USB option had vanished again.
The strangest thing about this is that just like the person here (https://forum.audacityteam.org/t/usb-option-not-displayed-in-recording-device-drop-down-menu/39084/1), it was working beautifully but suddenly stopped for no apparent reason.