I've loaded FreeDV v1.9.1 on a Windows 10 laptop but on the Easy Setup page, the pull-down in "Radio Device" is blank. I went to the Advanced settings window and tried selecting both the internal (Realtek) sound card and a USB PnP device but no luck. I've noticed on the Advanced page that the Microsoft Sound Mapper is also listed and I'm wondering if this may part of the problem. BTW: FreeDV will recognize my USB Signalink when I plug it in but I'm trying to run this laptop with a simple USB PnP device.
Any advice is appreciated!