diff --git a/include/core/dispatch.hpp b/include/core/dispatch.hpp
index 48022d56..ecb7a9c5 100644
--- a/include/core/dispatch.hpp
+++ b/include/core/dispatch.hpp
@@ -381,6 +381,16 @@ public:
  * Call on_new_core on on all objects.
  */
 	static void do_new_core() throw();
+/**
+ * Notify about changes to voice streams.
+ *
+ * Default implementation does nothing.
+ */
+	virtual void on_voice_stream_change();
+/**
+ * Call on_voice_stream_change on all objects.
+ */
+	static void do_voice_stream_change() throw();
 protected:
 /**
  * Call to indicate this target is interested in sound sample data.
diff --git a/src/core/dispatch.cpp b/src/core/dispatch.cpp
index 0c8c0863..09ddd4f9 100644
--- a/src/core/dispatch.cpp
+++ b/src/core/dispatch.cpp
@@ -497,3 +497,19 @@ void information_dispatch::do_new_core() throw()
 		END_EH_BLOCK(i, "on_new_core");
 	}
 }
+
+void information_dispatch::on_voice_stream_change()
+{
+	//Do nothing.
+}
+
+void information_dispatch::do_voice_stream_change() throw()
+{
+	if(in_global_ctors())
+		return;
+	for(auto& i : dispatch()) {
+		START_EH_BLOCK
+		i->on_voice_stream_change();
+		END_EH_BLOCK(i, "on_voice_stream_change");
+	}
+}
diff --git a/src/core/inthread.cpp b/src/core/inthread.cpp
index e0024542..8d99d8ac 100644
--- a/src/core/inthread.cpp
+++ b/src/core/inthread.cpp
@@ -9,6 +9,7 @@
 #include "library/ogg.hpp"
 #include "core/audioapi.hpp"
 #include "core/command.hpp"
+#include "core/dispatch.hpp"
 #include "core/framerate.hpp"
 #include "core/inthread.hpp"
 #include "core/keymapper.hpp"
@@ -1669,6 +1670,7 @@ out:
 				messages << "Can't add stream: " << e.what() << std::endl;
 				active_stream->put_ref();
 			}
+			information_dispatch::do_voice_stream_change();
 		} else
 			active_stream->put_ref();
 		active_stream = NULL;
@@ -1925,6 +1927,7 @@ uint64_t voicesub_import_stream(uint64_t ts, const std::string& filename, extern
 		throw;
 	}
 	st->unlock();	//Not locked.
+	information_dispatch::do_voice_stream_change();
 	return id;
 }
 
@@ -1934,6 +1937,7 @@ void voicesub_delete_stream(uint64_t id)
 	if(!current_collection)
 		throw std::runtime_error("No collection loaded");
 	current_collection->delete_stream(id);
+	information_dispatch::do_voice_stream_change();
 }
 
 void voicesub_export_superstream(const std::string& filename)
@@ -1957,6 +1961,7 @@ void voicesub_load_collection(const std::string& filename)
 	if(current_collection)
 		delete current_collection;
 	current_collection = newc;
+	information_dispatch::do_voice_stream_change();
 }
 
 void voicesub_unload_collection()
@@ -1965,6 +1970,7 @@ void voicesub_unload_collection()
 	if(current_collection)
 		delete current_collection;
 	current_collection = NULL;
+	information_dispatch::do_voice_stream_change();
 }
 
 void voicesub_alter_timebase(uint64_t id, uint64_t ts)
@@ -1973,6 +1979,7 @@ void voicesub_alter_timebase(uint64_t id, uint64_t ts)
 	if(!current_collection)
 		throw std::runtime_error("No collection loaded");
 	current_collection->alter_stream_timebase(id, ts);
+	information_dispatch::do_voice_stream_change();
 }
 
 double voicesub_ts_seconds(uint64_t ts)
diff --git a/src/platform/wxwidgets/editor-voicesub.cpp b/src/platform/wxwidgets/editor-voicesub.cpp
index 58a48b3f..3bc9ecc4 100644
--- a/src/platform/wxwidgets/editor-voicesub.cpp
+++ b/src/platform/wxwidgets/editor-voicesub.cpp
@@ -9,6 +9,7 @@
 #include <wx/control.h>
 #include <wx/combobox.h>
 
+#include "core/dispatch.hpp"
 #include "library/string.hpp"
 
 #define NOTHING 0xFFFFFFFFFFFFFFFFULL
@@ -22,6 +23,7 @@ class wxeditor_voicesub : public wxDialog
 {
 public:
 	wxeditor_voicesub(wxWindow* parent);
+	~wxeditor_voicesub() throw();
 	bool ShouldPreventAppExit() const;
 	void on_select(wxCommandEvent& e);
 	void on_play(wxCommandEvent& e);
@@ -39,9 +41,23 @@ public:
 	void on_refresh(wxCommandEvent& e);
 	void on_close(wxCommandEvent& e);
 	void on_wclose(wxCloseEvent& e);
-private:
-	bool closing;
 	void refresh();
+private:
+	struct refresh_listener : public information_dispatch
+	{
+		refresh_listener(wxeditor_voicesub* v)
+			: information_dispatch("voicesub-editor-change-listner")
+		{
+			obj = v;
+		}
+		void on_voice_stream_change()
+		{
+			wxeditor_voicesub* _obj = obj;
+			runuifun([_obj]() -> void { _obj->refresh(); });
+		}
+		wxeditor_voicesub* obj;
+	};
+	bool closing;
 	uint64_t get_id();
 	std::map<int, uint64_t> smap;
 	wxListBox* subtitles;
@@ -59,6 +75,8 @@ private:
 	wxButton* unloadbutton;
 	wxButton* refreshbutton;
 	wxButton* closebutton;
+	refresh_listener* rlistener;
+	
 };
 
 wxeditor_voicesub::wxeditor_voicesub(wxWindow* parent)
@@ -150,9 +168,15 @@ wxeditor_voicesub::wxeditor_voicesub(wxWindow* parent)
 
 	top_s->SetSizeHints(this);
 	Fit();
+	rlistener = new refresh_listener(this);
 	refresh();
 }
 
+wxeditor_voicesub::~wxeditor_voicesub() throw()
+{
+	delete rlistener;
+}
+
 void wxeditor_voicesub::on_select(wxCommandEvent& e)
 {
 	if(closing)
@@ -177,7 +201,6 @@ void wxeditor_voicesub::on_play(wxCommandEvent& e)
 	} catch(std::exception& e) {
 		show_message_ok(this, "Error playing", e.what(), wxICON_EXCLAMATION);
 	}
-	refresh();
 }
 
 void wxeditor_voicesub::on_delete(wxCommandEvent& e)
@@ -190,7 +213,6 @@ void wxeditor_voicesub::on_delete(wxCommandEvent& e)
 	} catch(std::exception& e) {
 		show_message_ok(this, "Error deleting", e.what(), wxICON_EXCLAMATION);
 	}
-	refresh();
 }
 
 void wxeditor_voicesub::on_export_o(wxCommandEvent& e)
@@ -209,7 +231,6 @@ void wxeditor_voicesub::on_export_o(wxCommandEvent& e)
 	} catch(std::exception& e) {
 		show_message_ok(this, "Error exporting", e.what(), wxICON_EXCLAMATION);
 	}
-	refresh();
 }
 
 void wxeditor_voicesub::on_export_p(wxCommandEvent& e)
@@ -228,7 +249,6 @@ void wxeditor_voicesub::on_export_p(wxCommandEvent& e)
 	} catch(std::exception& e) {
 		show_message_ok(this, "Error exporting", e.what(), wxICON_EXCLAMATION);
 	}
-	refresh();
 }
 
 void wxeditor_voicesub::on_export_q(wxCommandEvent& e)
@@ -247,7 +267,6 @@ void wxeditor_voicesub::on_export_q(wxCommandEvent& e)
 	} catch(std::exception& e) {
 		show_message_ok(this, "Error exporting", e.what(), wxICON_EXCLAMATION);
 	}
-	refresh();
 }
 
 void wxeditor_voicesub::on_export_s(wxCommandEvent& e)
@@ -263,7 +282,6 @@ void wxeditor_voicesub::on_export_s(wxCommandEvent& e)
 	} catch(std::exception& e) {
 		show_message_ok(this, "Error exporting superstream", e.what(), wxICON_EXCLAMATION);
 	}
-	refresh();
 }
 
 void wxeditor_voicesub::on_import_o(wxCommandEvent& e)
@@ -282,7 +300,6 @@ void wxeditor_voicesub::on_import_o(wxCommandEvent& e)
 	} catch(std::exception& e) {
 		show_message_ok(this, "Error importing", e.what(), wxICON_EXCLAMATION);
 	}
-	refresh();
 }
 
 void wxeditor_voicesub::on_import_p(wxCommandEvent& e)
@@ -301,7 +318,6 @@ void wxeditor_voicesub::on_import_p(wxCommandEvent& e)
 	} catch(std::exception& e) {
 		show_message_ok(this, "Error importing", e.what(), wxICON_EXCLAMATION);
 	}
-	refresh();
 }
 
 void wxeditor_voicesub::on_import_q(wxCommandEvent& e)
@@ -320,7 +336,6 @@ void wxeditor_voicesub::on_import_q(wxCommandEvent& e)
 	} catch(std::exception& e) {
 		show_message_ok(this, "Error importing", e.what(), wxICON_EXCLAMATION);
 	}
-	refresh();
 }
 
 void wxeditor_voicesub::on_change_ts(wxCommandEvent& e)
@@ -340,7 +355,6 @@ void wxeditor_voicesub::on_change_ts(wxCommandEvent& e)
 	} catch(std::exception& e) {
 		show_message_ok(this, "Error changing timebase", e.what(), wxICON_EXCLAMATION);
 	}
-	refresh();
 }
 
 void wxeditor_voicesub::on_load(wxCommandEvent& e)
@@ -356,13 +370,11 @@ void wxeditor_voicesub::on_load(wxCommandEvent& e)
 	} catch(std::exception& e) {
 		show_message_ok(this, "Error loading collection", e.what(), wxICON_EXCLAMATION);
 	}
-	refresh();
 }
 
 void wxeditor_voicesub::on_unload(wxCommandEvent& e)
 {
 	voicesub_unload_collection();
-	refresh();
 }
 
 void wxeditor_voicesub::on_refresh(wxCommandEvent& e)
@@ -378,6 +390,8 @@ void wxeditor_voicesub::on_close(wxCommandEvent& e)
 
 void wxeditor_voicesub::refresh()
 {
+	if(closing)
+		return;
 	bool cflag = voicesub_collection_loaded();
 	unloadbutton->Enable(cflag);
 	exportsbutton->Enable(cflag);