Automatically align metronome when recording it to a track

libs/ardour/track.cc

@@ -821,6 +821,12 @@ Track::set_align_choice_from_io ()
 	}
 #endif
 
+
+	/* metronome aligns to ExistingMaterial */
+	if (_input->connected_to (_session.click_io ())) {
+		have_physical = true;
+	}
+
 	if (have_physical) {
 		_disk_writer->set_align_style (ExistingMaterial);
 	} else {