diff --git a/editor.py b/editor.py
index 3aa587d..adae4ec 100644
--- a/editor.py
+++ b/editor.py
@@ -434,7 +434,16 @@ audio.addEventListener('timeupdate', () => {
   renderPlayhead();
   if (audio.currentTime >= end && !audio.paused) audio.pause();
 });
+audio.addEventListener('loadedmetadata', renderPlayhead);
+audio.addEventListener('play', renderPlayhead);
+audio.addEventListener('pause', renderPlayhead);
 audio.addEventListener('seeking', renderPlayhead);
+
+function animatePlayhead() {
+  renderPlayhead();
+  if (!audio.paused) requestAnimationFrame(animatePlayhead);
+}
+audio.addEventListener('play', () => requestAnimationFrame(animatePlayhead));
 function jump(sec) { audio.currentTime=Math.max(0,Math.min(duration,audio.currentTime+sec)); renderPlayhead(); }
 function playFromStart() { audio.currentTime=start; renderPlayhead(); audio.play(); }
 function playSelection() { audio.currentTime=start; renderPlayhead(); audio.play(); }
@@ -588,33 +597,37 @@ async function renameFile(kind, filename) {
   const newName = entered.trim();
   if (!newName || newName === current) return;
 
-  const response = await fetch('/api/file', {
-    method: 'POST',
-    headers: {'Content-Type': 'application/json'},
-    body: JSON.stringify({action: 'rename', kind, filename, new_filename: newName})
-  });
-  const result = await response.json();
-  if (!result.success) {
-    alert(result.error || 'Umbenennen fehlgeschlagen.');
-    return;
+  try {
+    const response = await fetch('/api/file', {
+      method: 'POST',
+      headers: {'Content-Type': 'application/json'},
+      body: JSON.stringify({action: 'rename', kind, filename, new_filename: newName})
+    });
+    const result = await response.json();
+    if (!response.ok || !result.success) throw new Error(result.error || `HTTP ${response.status}`);
+    location.reload();
+  } catch (error) {
+    console.error('Umbenennen fehlgeschlagen:', error);
+    alert('Umbenennen fehlgeschlagen: ' + error.message);
   }
-  location.reload();
 }
 
 async function deleteFile(kind, filename) {
   if (!confirm('Datei wirklich löschen?\n\n' + filename)) return;
 
-  const response = await fetch('/api/file', {
-    method: 'POST',
-    headers: {'Content-Type': 'application/json'},
-    body: JSON.stringify({action: 'delete', kind, filename})
-  });
-  const result = await response.json();
-  if (!result.success) {
-    alert(result.error || 'Löschen fehlgeschlagen.');
-    return;
+  try {
+    const response = await fetch('/api/file', {
+      method: 'POST',
+      headers: {'Content-Type': 'application/json'},
+      body: JSON.stringify({action: 'delete', kind, filename})
+    });
+    const result = await response.json();
+    if (!response.ok || !result.success) throw new Error(result.error || `HTTP ${response.status}`);
+    location.reload();
+  } catch (error) {
+    console.error('Löschen fehlgeschlagen:', error);
+    alert('Löschen fehlgeschlagen: ' + error.message);
   }
-  location.reload();
 }
 </script>
 </body>