Index: mainwindow.h
===================================================================
RCS file: /var/cvs/linuxsampler/gigedit/src/gigedit/mainwindow.h,v
retrieving revision 1.30
diff -u -r1.30 mainwindow.h
--- mainwindow.h	3 Feb 2008 00:19:54 -0000	1.30
+++ mainwindow.h	3 Feb 2008 16:47:42 -0000
@@ -336,6 +336,7 @@
     void on_action_sample_properties();
     void on_action_add_group();
     void on_action_add_sample();
+    void on_action_replace_all_samples_in_all_groups();
     void on_action_remove_sample();
 
     void on_action_add_instrument();
Index: mainwindow.cpp
===================================================================
RCS file: /var/cvs/linuxsampler/gigedit/src/gigedit/mainwindow.cpp,v
retrieving revision 1.43
diff -u -r1.43 mainwindow.cpp
--- mainwindow.cpp	3 Feb 2008 14:10:47 -0000	1.43
+++ mainwindow.cpp	3 Feb 2008 16:47:42 -0000
@@ -209,6 +209,11 @@
         sigc::mem_fun(*this, &MainWindow::on_action_remove_sample)
     );
 
+    actionGroup->add(
+	    Gtk::Action::create("ReplaceAllSamplesInAllGroups", _("Replace All Samples In All Groups")),
+	    sigc::mem_fun(*this, &MainWindow::on_action_replace_all_samples_in_all_groups)
+    );
+
     uiManager = Gtk::UIManager::create();
     uiManager->insert_action_group(actionGroup);
     add_accel_group(uiManager->get_accel_group());
@@ -248,6 +253,7 @@
         "    <menuitem action='SampleProperties'/>"
         "    <menuitem action='AddGroup'/>"
         "    <menuitem action='AddSample'/>"
+	"    <menuitem action='ReplaceAllSamplesInAllGroups' />"
         "    <separator/>"
         "    <menuitem action='RemoveSample'/>"
         "  </popup>"
@@ -1493,6 +1499,61 @@
     }
 }
 
+void MainWindow::on_action_replace_all_samples_in_all_groups() 
+{
+	if (!file) return;
+	Gtk::FileChooserDialog dialog(*this, _("Select Folder"),
+				      Gtk::FILE_CHOOSER_ACTION_SELECT_FOLDER);
+	dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
+	dialog.add_button(_("Select"), Gtk::RESPONSE_OK);
+	dialog.set_select_multiple(false);
+	if (dialog.run() == Gtk::RESPONSE_OK) 
+	{
+		Glib::ustring error_files;
+		Glib::ustring folder = dialog.get_filename();
+		for (gig::Sample* sample = file->GetFirstSample(); 
+		     sample; sample = file->GetNextSample()) 
+		{
+			std::string filename = folder + "/" + sample->pInfo->Name + ".wav";
+			SF_INFO info;
+			info.format = 0;
+			SNDFILE* hFile = sf_open(filename.c_str(), SFM_READ, &info);
+			try 
+			{
+				if (!hFile) throw std::string("could not open file");
+				int bitdepth;
+				switch (info.format & 0xff) {
+				case SF_FORMAT_PCM_S8:
+				case SF_FORMAT_PCM_16:
+				case SF_FORMAT_PCM_U8:
+					bitdepth = 16;
+					break;
+				case SF_FORMAT_PCM_24:
+				case SF_FORMAT_PCM_32:
+				case SF_FORMAT_FLOAT:
+				case SF_FORMAT_DOUBLE:
+					bitdepth = 24;
+					break;
+				default:
+					sf_close(hFile);
+					throw std::string("format not supported");
+				}
+				SampleImportItem sched_item;
+				sched_item.gig_sample  = sample;
+				sched_item.sample_path = filename;
+				m_SampleImportQueue.push_back(sched_item);
+				sf_close(hFile);
+				file_changed();
+			}
+			catch (std::string what) 
+			{
+				if (error_files.size()) error_files += "\n";
+				error_files += filename += " (" + what + ")";
+			}
+		}
+	}
+}
+
 void MainWindow::on_action_remove_sample() {
     if (!file) return;
     Glib::RefPtr<Gtk::TreeSelection> sel = m_TreeViewSamples.get_selection();