Okay,
I got a little further. I noticed there was an error message on all of my
sounds:
"One or more samples for this instrument failed to load. This may be because
the songfile uses an older default drumkit. This might be fixed by opening a
new drumkit."
So I opened the GMRockKit (system)
I see a 2020 post from Robert P. who had the same problem, but I don't see an
answer. I was using an older version of Hydrogen and I had sound.
I upgraded to 1.2.3, and I have no sound. I have PortAudio selected for Audio
System and Line (2-Steinberg UR22) for Device. I get the same result with
