makes more sense?

gistfile1.txt

diff --git a/src/Backends/Banshee.GStreamerSharp/Banshee.GStreamerSharp/Visualization.cs b/src/Backends/Banshee.GStreamerSharp/Banshee.GStreamerSharp/Visualization.cs
index d413918..f63dce9 100644
--- a/src/Backends/Banshee.GStreamerSharp/Banshee.GStreamerSharp/Visualization.cs
+++ b/src/Backends/Banshee.GStreamerSharp/Banshee.GStreamerSharp/Visualization.cs
@@ -173,23 +175,27 @@ namespace Banshee.GStreamerSharp
             "endianness = (int) BYTE_ORDER, " +
             "width = (int) 32");
 
-        private void BlockCallback (Pad pad, bool blocked)
+        private PadProbeReturn BlockCallback (Pad pad, PadProbeInfo info)
         {
-            if (!blocked) {
-                // Set thawing mode (discards buffers that are too old from the queue).
-                vis_thawing = true;
-            }
+            return PadProbeReturn.Ok;
         }
-        
+
+        ulong? block_probe = null;
         private bool Blocked
         {
             set {
                 if (vis_resampler == null)
                     return;
                 Pad queue_sink = vis_resampler.GetStaticPad ("src");
-                queue_sink.SetBlocked (value, new PadBlockCallback (BlockCallback));
+                if (!block_probe.HasValue) {
+                    block_probe = queue_sink.AddProbe (PadProbeType.Block, BlockCallback);
+                } else {
+                    queue_sink.RemoveProbe (block_probe.Value);
+
+                    // Set thawing mode (discards buffers that are too old from the queue).
+                    vis_thawing = true;
+                }
             }
         }
+
         private event VisualizationDataHandler OnDataAvailable = null;
         public event VisualizationDataHandler DataAvailable {
             add {