task manager will trigger new tasks as old tasks end

app/core.cpp

@@ -155,7 +155,11 @@ void Core::ImportFiles(const QStringList &urls)
       f->set_timestamp(file_info.lastModified());
 
       //olive::ProbeMedia(f);
-      olive::task_manager.AddTask(new Task());
+      // FIXME: Test code only
+      for (int i=0;i<8;i++) {
+        olive::task_manager.AddTask(new Task());
+      }
+      // End test code
 
       active_project->root()->add_child(f);