diff --git a/Sources/PlayerBridge.swift b/Sources/PlayerBridge.swift
index 57408d9..082f5f4 100644
--- a/Sources/PlayerBridge.swift
+++ b/Sources/PlayerBridge.swift
@@ -168,9 +168,12 @@ final class PlayerBridge: ObservableObject {
             let session = AVAudioSession.sharedInstance()
             try session.setCategory(.playback, mode: .default)
             try session.setActive(true)
-            NSLog("[MiniPlayer] AVAudioSession configured: playback + default")
+            let route = session.currentRoute
+            let outputs = route.outputs.map { "\($0.portName)(\($0.portType.rawValue))" }.joined(separator: ", ")
+            NSLog("[MiniPlayer] AVAudioSession configured: playback+default, outputs=[%@], secondaryAudioShouldBeSilencedHint=%d",
+                  outputs, session.secondaryAudioShouldBeSilencedHint)
         } catch {
-            NSLog("[MiniPlayer] AVAudioSession setup failed: \(error.localizedDescription)")
+            NSLog("[MiniPlayer] AVAudioSession setup failed: %@", error.localizedDescription)
         }
     }
     #endif
@@ -242,6 +245,15 @@ final class PlayerBridge: ObservableObject {
         let item = queue[index]
         print("[MiniPlayer] playIndex(\(index)): \(item.url.absoluteString)")
         
+        // 本地文件诊断：检查文件是否存在和可读
+        if item.url.isFileURL {
+            let path = item.url.path
+            let exists = FileManager.default.fileExists(atPath: path)
+            let readable = FileManager.default.isReadableFile(atPath: path)
+            let fileSize = (try? FileManager.default.attributesOfItem(atPath: path)[.size] as? Int) ?? 0
+            print("[MiniPlayer] Local file check: exists=\(exists), readable=\(readable), size=\(fileSize), path=\(path)")
+        }
+        
         // 先清除旧的 KVO，避免野指针
         itemStatusObserver?.invalidate()
         itemStatusObserver = nil
@@ -260,7 +272,7 @@ final class PlayerBridge: ObservableObject {
         player.replaceCurrentItem(with: playerItem)
         player.play()
         isPlaying = true
-        print("[MiniPlayer] player.play() called, rate=\(player.rate)")
+        print("[MiniPlayer] player.play() called, rate=\(player.rate), timeControlStatus=\(player.timeControlStatus.rawValue)")
         
         cachedDuration = 0
         progressRatio = 0