Onkyo TX-RZ50 Zone 2 setup using HDMI jack on PC and integrating two AV receivers to output music

After purchasing a Onkyo TX-RZ50 receiver to replace a 10 year old Pioneer 9.2 receiver I found what I was able to do with the old system was not working with the new receiver. After spending a day with trial and error, I finally figured out how to output music from my PC to multiples zones using my PC and two amplifiers. One amplifier powers 11 speakers in my family room and the other and powers the speakers in my living room and outside backyard. I can play my music library and Spotify. I have made two videos. One setup that should work for most people using the analog headphone jack output on the PC and this setup which uses the HDMI output on the Nvidia graphics card in my PC. 0:00 Intro 5:00 Wiring and Cables 8:10 Programming 14:15 Remote Control and OSD 21:30 Regarding Main + Sub