In the current 6.0 Beta, you can switch audio devices based on Monitor Profiles. You can create Monitor Profiles in the Monitor Configuration window, then assign audio devices to each Profile in the Manage Monitor Profiles window.

If you still need a way to move a window to the other monitor and switch the audio device at the same time (without switching Monitor Profiles), let me know. We have a feature planned for a future version that would allow you to create a Function to do this

Thanks!