Downloaded the lastest FreeDV program and got it to at least display the waterfall put not really sure how to set it up for properly with the 6300 and all the DAX options...Any help is appreciated until FreeDV is included in the upcoming new SmartSDR release.
For the FreeDV receive input, use a DAX RX line.
For FreeDV receive output, sent the audio to your computer's sound card.
For FreeDV Mike input, you need to have a mike or USB Mike connected to your computer and select that computer line .
Then send the FreeDV transmit OUT to the DAX TX audio line on the same channel that you are using for RX.
The enable DAX on the Flea transmit panel.
That should get you started. Then see the directions for other settings.
Hope this helps.