I have been unable to re-enable audio since upgrading to Multiplicity 4.  Neither Sending nor Receiving computer show an Audio tray icon, so the vast majority of troubleshooting info I can find isn't possible.  I'm sending via IP address, and I've tried every available quality mode.  Sending computer is Win10, receiver is Win11.  Audio was a bit iffy in Multiplicity 3 as well, but it suddenly started working one day, and then worked fine until I upgraded.  Any thoughts?