Windows version (sonic pi)??? Ahhh, that would be interesting. Odd a search hadn't turned that up.
No, I wasn't suggesting it was Pixel... or the VM. Just trying to figure it out.
Just installed another version of Debian live on a VM and I do have sound. Have sound on all other VMs... just not Pixel. And to clarify, it's not just Sonic Pi.
I had trouble with a Pi a while back (sound) and followed a command line troubleshooting routine that works well. I have to look up what I did that day and see if I can't learn more.
Thanks for everyone's help. I will return with what I learn in case this may help others at some point (though that seems unlikely