Useful and small improvement for multi-view

Hi,

When using the multi-view mode, the AUDIO CHANNEL SELECTION option is missing. I feel the problem is the complexity to handle all the windows and the interface. So I suggest a simple method to support audio selection: when pressing the AUDIO BUTTON (the button that you've selected in the mapping section) then change to the next audio in the current widow. In this case you don't need to open any window in the UI. Only do the internal change.

You agree?