New Post: MeteringSampleProvider and AsioOut

Ah, Thanks! That solved it for Asio.

Moved my UI update code from the StreamVolume event handler to a different Sub called "UpdateMeters" and changed the event handler code to:

        MaxSampleValues = e.MaxSampleValues  'To use in updating Sub
        If Not Dispatcher.CheckAccess() Then
            Dispatcher.BeginInvoke(DispatcherPriority.Background, Sub() UpdateMeters())
        End If

Works fine, thx.