diff --git a/vite/public/assets/0721/onyx/q4-1.mp3 b/vite/public/assets/0721/onyx/q4-1.mp3
deleted file mode 100644
index abeb8e6..0000000
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diff --git a/vite/public/assets/0721/onyx/q4.mp3 b/vite/public/assets/0721/onyx/q4.mp3
deleted file mode 100644
index 9ee272f..0000000
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diff --git a/vite/public/assets/0721/onyx/q5.mp3 b/vite/public/assets/0721/onyx/q5.mp3
deleted file mode 100644
index 0935b57..0000000
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diff --git a/vite/public/assets/0721/shimmer/q4-1.mp3 b/vite/public/assets/0721/shimmer/q4-1.mp3
deleted file mode 100644
index 22a8f3b..0000000
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diff --git a/vite/public/assets/0721/shimmer/q4-2.mp3 b/vite/public/assets/0721/shimmer/q4-2.mp3
deleted file mode 100644
index 6d4cfae..0000000
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diff --git a/vite/public/assets/0721/shimmer/q4.mp3 b/vite/public/assets/0721/shimmer/q4.mp3
deleted file mode 100644
index 91e321a..0000000
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diff --git a/vite/public/assets/0721/shimmer/q5.mp3 b/vite/public/assets/0721/shimmer/q5.mp3
deleted file mode 100644
index 5d3a36f..0000000
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diff --git a/vite/public/assets/number/0.mp3 b/vite/public/assets/number/0.mp3
index 92d9567..cb455de 100644
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diff --git a/vite/public/assets/number/1.mp3 b/vite/public/assets/number/1.mp3
index b7541f1..bcd96c3 100644
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diff --git a/vite/public/assets/number/2.mp3 b/vite/public/assets/number/2.mp3
index 9b1e126..6806ec9 100644
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diff --git a/vite/public/assets/number/3.mp3 b/vite/public/assets/number/3.mp3
index c236a52..9e3589e 100644
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diff --git a/vite/public/assets/number/4.mp3 b/vite/public/assets/number/4.mp3
index b2b485d..4f9af30 100644
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diff --git a/vite/public/assets/number/5.mp3 b/vite/public/assets/number/5.mp3
index 68c846a..8fc704b 100644
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diff --git a/vite/public/assets/number/6.mp3 b/vite/public/assets/number/6.mp3
index 8cef879..5f1a287 100644
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diff --git a/vite/public/assets/number/7.mp3 b/vite/public/assets/number/7.mp3
index 0c92a44..01baf66 100644
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diff --git a/vite/public/assets/number/8.mp3 b/vite/public/assets/number/8.mp3
index 549dbc9..d31c82d 100644
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diff --git a/vite/public/assets/number/9.mp3 b/vite/public/assets/number/9.mp3
index b4ce93f..ddb8171 100644
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diff --git a/vite/public/assets/number/a.mp3 b/vite/public/assets/number/a.mp3
new file mode 100644
index 0000000..ce56010
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diff --git a/vite/public/assets/number/error.mp3 b/vite/public/assets/number/error.mp3
new file mode 100644
index 0000000..d94b9ac
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diff --git a/vite/public/assets/number/q.mp3 b/vite/public/assets/number/q.mp3
new file mode 100644
index 0000000..b6d1bd5
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diff --git a/vite/public/assets/q4-1.mp3 b/vite/public/assets/q4-1.mp3
index 990aece..abeb8e6 100644
Binary files a/vite/public/assets/q4-1.mp3 and b/vite/public/assets/q4-1.mp3 differ
diff --git a/vite/public/assets/0721/onyx/q4-2.mp3 b/vite/public/assets/q4-2.mp3
similarity index 100%
rename from vite/public/assets/0721/onyx/q4-2.mp3
rename to vite/public/assets/q4-2.mp3
diff --git a/vite/public/assets/q4.mp3 b/vite/public/assets/q4.mp3
index 0e4a8f0..9ee272f 100644
Binary files a/vite/public/assets/q4.mp3 and b/vite/public/assets/q4.mp3 differ
diff --git a/vite/public/assets/0721/onyx/q5-2.mp3 b/vite/public/assets/q5-2.mp3
similarity index 100%
rename from vite/public/assets/0721/onyx/q5-2.mp3
rename to vite/public/assets/q5-2.mp3
diff --git a/vite/public/assets/q5.mp3 b/vite/public/assets/q5.mp3
index 21c887e..0935b57 100644
Binary files a/vite/public/assets/q5.mp3 and b/vite/public/assets/q5.mp3 differ
diff --git a/vite/public/cuelist_free.json b/vite/public/cuelist_free.json
index 8361532..e2dc6d1 100644
--- a/vite/public/cuelist_free.json
+++ b/vite/public/cuelist_free.json
@@ -31,7 +31,7 @@
         { 
             "id": 4, 
             "name": "Q4", 
-            "type": "headphone",
+            "type": "phone",
             "description": "引導撥號",
             "auto": false,
             "audioFile": "assets/0721/onyx/q4.mp3",
diff --git a/vite/src/comps/numpad.jsx b/vite/src/comps/numpad.jsx
index d82aad7..ab10895 100644
--- a/vite/src/comps/numpad.jsx
+++ b/vite/src/comps/numpad.jsx
@@ -36,19 +36,32 @@ export default function NumPad({onSend}){
 
             if(refInput.current && refInput.current.length>0){
                 const num=parseInt(refInput.current);            
-                if(num>=1 && num<=24) onSend(num);
-                setInput(()=>'');
-            }
+                if(num>=1 && num<=24){
+                    onSend(num);
+                    refAudio.current[KEY_ENTER]?.play(); 
+                }else{
+                    refAudio.current['error']?.play();
+                }
+            
+            
+            }else{
+                refAudio.current['error']?.play();
+            
+            }   
+            setInput(()=>'');                1        
+
             return;
         }else if(e.key===KEY_BACKSPACE || e.key==='Backspace' || e.key==='Delete'){
             setInput((prev)=>'');
+
+            refAudio.current[KEY_BACKSPACE]?.play(); 
             return;
         }
         
         const numKey = TMP_MAP_KEY[parseInt(e.key)] || parseInt(e.key);
         if(isNaN(numKey) || numKey < 0 || numKey > 9) return; // Ignore non-numeric keys
 
-        refAudio.current[numKey]?.play();          
+        refAudio.current[numKey.toString()]?.play();          
         setInput((prev)=>`${prev||''}${numKey}`);        
         
         
@@ -56,12 +69,20 @@ export default function NumPad({onSend}){
 
 
     useEffect(() => {
-     
-        refAudio.current = [...Array(10).keys()].map(index =>{
-            const file=`assets/number/${index}.mp3`;
+        
+        const keys=[
+            '1','2','3',
+            '4','5','6',
+            '7','8','9',
+            '0',KEY_ENTER,KEY_BACKSPACE,'error'
+        ];
+
+        refAudio.current = {};
+        for(var k in keys){
+            const file=`assets/number/${keys[k]}.mp3`;
             // console.log(`Loading audio file: ${file}`);
-            return new Audio(file);
-        });
+            refAudio.current[keys[k]]=new Audio(file);
+        }
 
     },[]);