set ui elements on the uithread after asking for permission

Sound/Sound/SoundViewController.cs

@@ -85,12 +85,17 @@ namespace Sound
 					stopwatch = new Stopwatch ();
 					stopwatch.Start ();
 
-					LengthOfRecordingLabel.Text = string.Empty;
-					RecordingStatusLabel.Text = "Recording";
-					StartRecordingButton.Enabled = false;
-					StopRecordingButton.Enabled = true;
-					PlayRecordedSoundButton.Enabled = false;
-				} else {
+					UIApplication
+						.SharedApplication
+						.BeginInvokeOnMainThread (() => {
+							LengthOfRecordingLabel.Text = string.Empty;
+							RecordingStatusLabel.Text = "Recording";
+							StartRecordingButton.Enabled = false;
+							StopRecordingButton.Enabled = true;
+							PlayRecordedSoundButton.Enabled = false;
+						});
+
+                } else {
 					Console.WriteLine ("YOU MUST ENABLE MICROPHONE PERMISSION");
 				}
 			});