Restricted external processors to unlocked sentences

resources/uk/co/majenko/audiobookrecorder/config.txt

@@ -1 +1 @@
-version=0.1.3
+version=0.1.4

src/uk/co/majenko/audiobookrecorder/AudiobookRecorder.java

@@ -1145,9 +1145,11 @@ public class AudiobookRecorder extends JFrame {
                             Chapter c = (Chapter)o.getObject();
                             for (Enumeration s = c.children(); s.hasMoreElements();) {
                                 Sentence snt = (Sentence)s.nextElement();
+                                if (!snt.isLocked()) {
                                     snt.runExternalProcessor(Utils.s2i(o.getActionCommand()));
                                 }
                             }
+                        }
                     });
                     ob.setActionCommand(Integer.toString(i));
                     external.add(ob);

src/uk/co/majenko/audiobookrecorder/Sentence.java

@@ -1178,6 +1178,7 @@ public class Sentence extends DefaultMutableTreeNode implements Cacheable {
     }
 
     public void runExternalProcessor(int num) {
+        if (isLocked()) return;
         ExternalProcessor ed = new ExternalProcessor(this, num);
         Thread t = new Thread(ed);
         t.start();