Upgraded to the latest 2.4 firmware. Had to run Windows XP to do that!
I have some basic code working with Mercury. This really is a great little receiver. Still some problems with the code that takes the data from Ozy and creates the buffer for jack but at least I can tune around and hear the audio with the occasional click because of the buffering problem.
Still running everything at 48K as I try to resolve the buffering problem.
And this shows the System Monitor when running the receiver and the Java GUI.