diff --git a/App.tsx b/App.tsx
index 23e77d4..5a1171f 100644
--- a/App.tsx
+++ b/App.tsx
@@ -6,6 +6,7 @@ import { Article, PlaybackStatus, PlayerState, VoiceName, AudioSegment, ReaderSe
 import { MIN_SPEED, MAX_SPEED, SPEED_STEP } from './constants';
 import { extractArticleContent, generateSpeechFromText } from './services/geminiService';
 import { base64ToUint8Array, createWavBlob } from './services/audioUtils';
+import { createTrackedObjectUrl, revokeAllTrackedObjectUrls, revokeMultipleObjectUrls, revokeTrackedObjectUrl } from './services/objectUrlManager';
 import { segmentText } from './services/textUtils';
 import { QueueItem } from './components/QueueItem';
 import { VoiceSelector } from './components/VoiceSelector';
@@ -47,6 +48,11 @@ export default function App() {
     return null;
   };
 
+  const cleanupArticleAudio = (article?: Article) => {
+    if (!article) return;
+    revokeMultipleObjectUrls(article.segments.map(seg => seg.audioUrl));
+  };
+
   // -- State Updaters --
 
   const updateArticle = (id: string, updates: Partial<Article>) => {
@@ -56,8 +62,13 @@ export default function App() {
   const updateSegment = (articleId: string, segmentId: string, updates: Partial<AudioSegment>) => {
     setQueue(prev => prev.map(article => {
       if (article.id !== articleId) return article;
-      const newSegments = article.segments.map(seg => 
-        seg.id === segmentId ? { ...seg, ...updates } : seg
+      const newSegments = article.segments.map(seg =>
+        seg.id === segmentId ? (() => {
+          if ('audioUrl' in updates && seg.audioUrl && updates.audioUrl !== seg.audioUrl) {
+            revokeTrackedObjectUrl(seg.audioUrl);
+          }
+          return { ...seg, ...updates };
+        })() : seg
       );
       return { ...article, segments: newSegments };
     }));
@@ -76,7 +87,7 @@ export default function App() {
       const base64Audio = await generateSpeechFromText(text, voice);
       const pcmData = base64ToUint8Array(base64Audio);
       const wavBlob = createWavBlob(pcmData);
-      const audioUrl = URL.createObjectURL(wavBlob);
+      const audioUrl = createTrackedObjectUrl(wavBlob);
       updateSegment(articleId, segmentId, { audioUrl, isLoading: false });
     } catch (error) {
       console.error("Segment generation failed", error);
@@ -115,6 +126,7 @@ export default function App() {
             if (idx <= article.currentSegmentIndex) {
               return seg;
             }
+            revokeTrackedObjectUrl(seg.audioUrl);
             // Invalidate all future segments
             return { ...seg, audioUrl: undefined, isLoading: false, hasError: false };
           })
@@ -123,12 +135,15 @@ export default function App() {
       // For inactive articles, invalidate everything
       return {
         ...article,
-        segments: article.segments.map(seg => ({ 
-          ...seg, 
-          audioUrl: undefined, 
-          isLoading: false, 
-          hasError: false 
-        }))
+        segments: article.segments.map(seg => {
+          revokeTrackedObjectUrl(seg.audioUrl);
+          return {
+            ...seg,
+            audioUrl: undefined,
+            isLoading: false,
+            hasError: false
+          };
+        })
       };
     }));
   }, [playerState.currentArticleId]);
@@ -373,7 +388,15 @@ export default function App() {
 
     audio.addEventListener('ended', handleEnded);
     return () => audio.removeEventListener('ended', handleEnded);
-  }, [playerState.currentArticleId, playArticle]); 
+  }, [playerState.currentArticleId, playArticle]);
+
+  useEffect(() => {
+    return () => {
+      audioRef.current.pause();
+      audioRef.current.src = '';
+      revokeAllTrackedObjectUrls();
+    };
+  }, []);
 
   const handleSpeedChange = (newSpeed: number) => {
     const speed = Math.max(MIN_SPEED, Math.min(MAX_SPEED, newSpeed));
@@ -547,10 +570,15 @@ export default function App() {
                               onRemove={() => {
                                   if (playerState.currentArticleId === article.id) {
                                       pausePlayback();
-                                      setPlayerState(prev => ({ ...prev, currentArticleId: null }));
+                                      setPlayerState(prev => ({ ...prev, currentArticleId: null, isPlaying: false }));
+                                      audioRef.current.src = '';
                                   }
-                                  setQueue(prev => prev.filter(a => a.id !== article.id));
-                                  if (viewId === article.id) setViewId(null);
+                                  setQueue(prev => {
+                                    const target = prev.find(a => a.id === article.id);
+                                    cleanupArticleAudio(target);
+                                    return prev.filter(a => a.id !== article.id);
+                                  });
+                                  setViewId(prev => prev === article.id ? null : prev);
                               }}
                           />
                       </div>
diff --git a/services/objectUrlManager.ts b/services/objectUrlManager.ts
new file mode 100644
index 0000000..f8bec9e
--- /dev/null
+++ b/services/objectUrlManager.ts
@@ -0,0 +1,24 @@
+const trackedUrls = new Set<string>();
+
+export const createTrackedObjectUrl = (blob: Blob): string => {
+  const url = URL.createObjectURL(blob);
+  trackedUrls.add(url);
+  return url;
+};
+
+export const revokeTrackedObjectUrl = (url?: string) => {
+  if (!url) return;
+  if (trackedUrls.has(url)) {
+    trackedUrls.delete(url);
+  }
+  URL.revokeObjectURL(url);
+};
+
+export const revokeMultipleObjectUrls = (urls: (string | undefined)[]) => {
+  urls.forEach(revokeTrackedObjectUrl);
+};
+
+export const revokeAllTrackedObjectUrls = () => {
+  trackedUrls.forEach(url => URL.revokeObjectURL(url));
+  trackedUrls.clear();
+};