@Pascal: Someone else has mentioned, and I can confirm that getting audio routed from Audiobus 3 into Studiomux seems not to be working. I have also reported this to Audiobus’ developer. No matter which order the apps are launched, I can’t seem to successfully get audio from Audiobus into Studiomux as an input. If I choose Audiobus Intermediate out from the IAA instruments list, the audio doesn’t arrive in Studiomux. If I try to set Studiomux as a destination from Audiobus, I end up with a channel whose input and output are Audiobus.
we found the issue and it will be fixed within the next update.