Yes, a HomePlug unit should be fine. According to the article in the link in my earlier post:
"Industry groups, such as HomePlug and the HomeGrid Forum have implemented industry specifications that also have spectral notches for the amateur bands. This is a successful model, because with millions of in-premise modems deployed, ARRL has not received reports of harmful interference involving HomePlug or HomeGrid Forum products. These groups realize that for BPL to achieve its potential, its proponents and regulators must proactively address interference problems through good rules and industry standards and practices."
I think a hardwired CAT5/6 cable would still be better, but at least the HomePlug equipment will not generate interference to licensed radio operators, in violation of FCC Part 15.
Wondering, though, what Oppo player/DAC are you using? I just upgraded from a BDP-103D to a BDP-105D. I have not implemented MC yet (computer is on the way) but instead have a HDD connected directly via the USB port and using Oppo's wi-fi app on my Samsung phone. I get occasional lockups with that method (using the 103 or the 105). I am planning to implement MC along with Gizmo or MCRemote to eliminate the lockups. What is your setup?
Allen N5XZ