diff --git a/DBObj/SQLManager.cs b/DBObj/SQLManager.cs
index a25f0b0..e49218a 100644
--- a/DBObj/SQLManager.cs
+++ b/DBObj/SQLManager.cs
@@ -4,7 +4,7 @@ namespace DBObj
 {
     public class SQLManager
     {
-        private MyDB db = new MyDB();
+        //private MyDB db = new MyDB();
         public List<SongData> FavoriteSongs { get; private set; }
         //public bool IsUserLoggedIn { get; set; }  
         //public string UserPhoneNumber { get; set; }  
@@ -57,8 +57,9 @@ namespace DBObj
             string query = $"SELECT * FROM song_library_cache WHERE language_name = '國語' ORDER BY add_date DESC LIMIT {Utils.Env.GetInt("NewSongLimit", 100)};";
             return select_Mysql(query);
         }
-        public List<SongData> SearchHotSongs(){
-            string query= $"SELECT * FROM song_library_cache WHERE language_name = '國語' ORDER BY song_counts DESC LIMIT {Utils.Env.GetInt("HotSongLimit", 100)};";
+        public List<SongData> SearchHotSongs()
+        {
+            string query = $"SELECT * FROM song_library_cache WHERE language_name = '國語' ORDER BY song_counts DESC LIMIT {Utils.Env.GetInt("HotSongLimit", 100)};";
             return select_Mysql(query);
         }
         public List<SongData> SearchSongsBySinger(string keyword)
@@ -72,40 +73,55 @@ namespace DBObj
         {
             string query = $"SELECT * FROM song_library_cache WHERE LOWER(song_name) LIKE CONCAT('%', LOWER('{keyword}'), '%');";
             return select_Mysql(query);
-        }        
+        }
         public SongData SearchSongByNumber(string songNumber)
         {
+            List<SongData> searchResults = new List<SongData>();
             string query = $"SELECT * FROM song_library_cache WHERE song_id = '{songNumber}';";
-            var searchResults =select_Mysql(query);
-            return  searchResults.FirstOrDefault();
+            using (var db = new MyDB())
+            {
+                if (db.open(query, null))
+                {
+                    if (db.recordCount() != 0)
+                    {
+                        searchResults.Add(newSongData( db ));
+                    }
+                }
+            }
+            return searchResults.FirstOrDefault();
         }
-        private  List<SongData> select_Mysql(string query)
+        private List<SongData> select_Mysql(string query)
         {
             List<SongData> searchResults = new List<SongData>();
             Console.WriteLine(query);
             using (var db = new MyDB())
             {
-                if (db.open(query, null)) {
-                    while (db.Read()){
-                       searchResults.Add(new SongData(
-                            db.Field<string>("song_id"),
-                            db.Field<string>("song_name"),
-                            db.Field<string>("artistA"),
-                            db.Field<string>("artistB"),
-                            db.Field<string>("song_filename"),
-                            db.Field<string>("artistA_simplified"),
-                            db.Field<string>("artistB_simplified"),
-                            db.Field<string>("song_simplified"),
-                            db.Field<int>("vocal")
-                        ));
+                if (db.open(query, null))
+                {
+                    while (db.Read())
+                    {
+                        searchResults.Add(newSongData( db ));
                     }
                 }
-               
+
                 Console.WriteLine($"查詢到 {searchResults.Count} 筆資料。");
             }
 
             return searchResults;
         }
+        private SongData newSongData(MyDB db) {
+            return new SongData(
+                db.Field<string>("song_id") ?? "",
+                db.Field<string>("song_name") ?? "",
+                db.Field<string>("artistA") ?? "",
+                db.Field<string>("artistB") ?? "",
+                db.Field<string>("song_filename") ?? "",
+                db.Field<string>("artistA_simplified") ?? "",
+                db.Field<string>("artistB_simplified") ?? "",
+                db.Field<string>("song_simplified")?? "",
+                db.Field<int>("vocal") 
+            );
+        }
 
     }
 }
\ No newline at end of file
diff --git a/DBObj/SongData.cs b/DBObj/SongData.cs
index 5bab3cc..db72a72 100644
--- a/DBObj/SongData.cs
+++ b/DBObj/SongData.cs
@@ -65,6 +65,34 @@ namespace DBObj
                 ? String.Format("{0} - {1} - {2}", A.getName(false), B.getName(false), basic.getName(false))
                 : String.Format("{0} - {1}", A.getName(false), basic.getName(false));
         }
+        public bool FileExistsInServers()
+        {
+            foreach (var server in Utils.Env.GetSongServers())
+            {
+                try
+                {
+                    Console.WriteLine($"伺服器路徑: '{server}'");
+                    string fullPath = Path.Combine(server, basic.getFileName());
+
+                    if (File.Exists(fullPath))
+                    {
+                        Console.WriteLine($"找到檔案: {fullPath}");
+                        return true;
+                    }
+                    else
+                    {
+                        Console.WriteLine($"找不到檔案: {fullPath}");
+                    }
+                }
+                catch (Exception ex)
+                {
+                    Console.WriteLine($"檢查檔案時發生錯誤: {ex.Message}");
+                }
+            }
+
+            Console.WriteLine($"全部 server 都找不到檔案: {basic.getFileName()}");
+            return false;
+        }
         
         public string getFile()
         {
@@ -82,11 +110,20 @@ namespace DBObj
         }
         public Color GetStateColor(){
             Color c = Color.White;
-            if (state == PlayState.Played){
+            if (state == PlayState.Played)
+            {
                 c = Color.Gray;//Color.FromArgb(200, 75, 125); // 播畢顏色：紫紅色
-            }else if (state == PlayState.Playing){
+            }
+            else if (state == PlayState.NoFile)
+            { 
+                c = Color.Gray;
+            }
+            else if (state == PlayState.Playing)
+            {
                 c = Color.LimeGreen;
-            }else if (state == PlayState.InsertPlayback){
+            }
+            else if (state == PlayState.InsertPlayback)
+            {
                 c = Color.Gold;
             }
             return c;
diff --git a/DBObj/SongList.cs b/DBObj/SongList.cs
index a218e57..9931b2a 100644
--- a/DBObj/SongList.cs
+++ b/DBObj/SongList.cs
@@ -38,7 +38,20 @@ namespace DBObj
         {
             playing = not_played[0];
             not_played.RemoveAt(0);
+
+            if (!playing.FileExistsInServers())
+            {
+                playing.SetState(PlayState.NoFile);
+                played.Add(playing);
+                playing = null;
+                if (not_played.Count <= 0)
+                    return NextPublicSong();
+                else
+                    return NextUserSong();
+            }
+
             playing.SetState(PlayState.Playing);
+
             UpdateNextSongLabel();
             return playing;
         }
@@ -68,14 +81,29 @@ namespace DBObj
 
         public static void Add(SongData song)
         {
-            not_played.Add(new SongData(song,PlayState.NotPlayed));
-            // PrimaryForm.Instance.AddSongCount(songData.Number);
-            chkCut();
+            if (song.FileExistsInServers())
+            {
+                not_played.Add(new SongData(song, PlayState.NotPlayed));
+                // PrimaryForm.Instance.AddSongCount(songData.Number);
+                chkCut();
+            }
+            else
+            {
+                played.Add(new SongData(song, PlayState.NoFile));
+            }
+            
         }
         public static void Insert(SongData song)
         {
-            not_played.Insert(0, new SongData(song,PlayState.InsertPlayback));
-            chkCut();
+            if (song.FileExistsInServers()) {
+                not_played.Insert(0, new SongData(song,PlayState.InsertPlayback));
+                chkCut();
+            }
+            else
+            {
+                played.Add(new SongData(song, PlayState.NoFile));
+            }
+            
         }
         private static void chkCut()
         {
diff --git a/OverlayFormObj/OverlayForm.Helpers.cs b/OverlayFormObj/OverlayForm.Helpers.cs
index 86a29c8..884a6d0 100644
--- a/OverlayFormObj/OverlayForm.Helpers.cs
+++ b/OverlayFormObj/OverlayForm.Helpers.cs
@@ -54,7 +54,7 @@ namespace OverlayFormObj
                 }
             }
 
-            this.Invalidate();
+            //this.Invalidate();
             blackBackgroundPanel.Invalidate();
             // StartMarquee();
         }
@@ -85,7 +85,7 @@ namespace OverlayFormObj
                     Console.WriteLine("Marquee 跑完了！");
                 }
 
-                this.Invalidate();
+                //this.Invalidate();
                 blackBackgroundPanel.Invalidate();
             };
 
@@ -142,7 +142,7 @@ namespace OverlayFormObj
                     }
                     secondLineTimer.Stop();
                     secondLineTimer.Dispose();
-                    this.Invalidate();
+                    //this.Invalidate();
                     blackBackgroundPanel.Invalidate();
                 }
             };
@@ -150,7 +150,7 @@ namespace OverlayFormObj
             secondLineTimer.Start();
             blackBackgroundPanel.Invalidate();
         }
-
+/*
         public void UpdateMarqueeTextThirdLine(string newText)
         {
             
@@ -170,6 +170,7 @@ namespace OverlayFormObj
             
             Invalidate();
         }
+*/
 
         private void MarqueeTimer_Tick(object sender, EventArgs e)
         {
@@ -187,7 +188,7 @@ namespace OverlayFormObj
                 }
             }
 
-            this.Invalidate();
+            //this.Invalidate();
             blackBackgroundPanel.Invalidate();
         }
 
diff --git a/Program.cs b/Program.cs
index b264ea4..0cfd615 100644
--- a/Program.cs
+++ b/Program.cs
@@ -17,7 +17,7 @@ namespace DualScreenDemo
         [STAThread]
         static void Main()
         {
-            Console.WriteLine("Server V.1.2.5 202507291800");
+            Console.WriteLine("Server V.1.2.6 202508011600");
             if (Utils.Env.GetBool("IsCursor", true)) Cursor.Hide();
             AppDomain.CurrentDomain.ProcessExit += (s, e) => Cursor.Show();
             //Console.WriteLine("正在與中控取得聯繫...");