Ok. We all know that Syrinscape does not have a way to select an audio playback. So, many of us use programs like Voicemeeter Banana to separate audio and then assign Syrinsacpe to a virtual audio cable. To do this, though, before we launch Syrinscape we need to remember to change the windows default playback to whatever we assigned Syrinscape to and once Syrinscape is fully launched, we need to change it back. I'm human and sometimes I forget to put the playback default back, accidentally shut down Syrinscape, etc..
There is an alternate way to select the audio playback device for Syrinscape using audio router. It works well for me. There are still a few steps involved but it still prevents me from having to remember the playback device thing, launching and relaunching Syrinscape, etc. Step by step instructions on using with Voicemeeter Banana are attached. I hope this helps some of you! Note - I don't know if there is a download for audio router for the Mac, so I reference windows only in my post.