All information I have listed else where on this site on setup my Flex 1500 and 3000.
Is different here because of new software from HRD.
MINI DELUXE is not needed
1. I am running Power SDR v2.7.2
2. Ham Radio Deluxe 126.96.36.1995 Release 188.8.131.525
3. I have 4 Virtual Com ports 13-14 for Cat Control, 17-18 for PTT
4. setup HRD choose SDR RADIO COM 13
5. HRD Main Screen USB Mode
6. Flex Screen DIGU MODE
7. Flex Screen Filter 3.0
8.PSK DM-780 Program Screen Program Option choose PTT (tic ptt)
9. PTT screen choose VIA Com Port (enter) COM 18
10. Back to Program Option screen DM-780 choose Sound Card (tic Soundcard)
11. Receive Device Line 1(Virtual Audio Cable), Output (transmit) Line 2 (Virtual Audio Cable)
I have included several pictures of the setup , hope this helps with your setup.