fldigi - Initial work to enable PnP support for fldigi. Wrote a custom tool to map between an ALSA device and a PortAudio device.

src/et-portaudio/README.md

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+# et-portaudio
+
+A utility program intended for script use to convert a supported
+EmComm Tools ALSA audio device (i.e. `ET_AUDIO`) to a PulseAudio device. 
+
+## Usage
+
+Returns a JSON object with the PulseAudio device details on success.
+
+```bash
+./et-portaudio 2>/dev/null
+{
+  "device": "USB Audio Device: - (hw:1,0)",
+  "index": 6
+}
+```
+
+If no supported device is found or on error, the utility exits with an
+exit status of 1.
+
+
+## Build
+
+``bash
+make
+```