Track down and hopefully fix some problems with memory management.

src/mpv_player.py

@@ -32,6 +32,8 @@ class MpvPlayer:
         self.endFileCallback = None  # Callback for when file finishes
         self.playlist = []  # Current playlist (for multi-file audiobooks)
         self.currentPlaylistIndex = 0  # Current file index in playlist
+        self.activeTempFiles = []  # Track temp files for cleanup
+        self.tempFileLock = threading.Lock()  # Protect temp file list
 
         if not HAS_MPV:
             print("Warning: python-mpv not installed. Audio playback will not work.")
@@ -90,21 +92,31 @@ class MpvPlayer:
             if playbackSpeed is None:
                 playbackSpeed = self.playbackSpeed
 
+            # Track this temp file for cleanup
+            with self.tempFileLock:
+                self.activeTempFiles.append(tempFile.name)
+
             # Load and play the temp file
             success = self.load_audio_file(tempFile.name, playbackSpeed=playbackSpeed)
             if success:
                 success = self.play_audio_file()
 
-            # Clean up temp file after a delay (mpv needs time to load it)
+            # Schedule cleanup after mpv loads the file
+            # Use shorter delay and clean up old files too
             if tempFile:
-                import threading
                 import time
                 def cleanup_temp_file(filepath):
-                    time.sleep(5)  # Wait for mpv to fully load the file
+                    time.sleep(2)  # Reduced from 5s - mpv loads files quickly
                     try:
                         os.unlink(filepath)
                     except:
                         pass
+                    # Remove from active list
+                    with self.tempFileLock:
+                        try:
+                            self.activeTempFiles.remove(filepath)
+                        except ValueError:
+                            pass  # Already removed
                 threading.Thread(target=cleanup_temp_file, args=(tempFile.name,), daemon=True).start()
 
             return success
@@ -131,6 +143,8 @@ class MpvPlayer:
         if self.isInitialized and self.player:
             self.player.stop()
             self.isPaused = False
+            # Immediately clean up any temp files
+            self._cleanup_temp_files()
 
     def is_playing(self):
         """Check if audio is currently playing"""
@@ -247,6 +261,19 @@ class MpvPlayer:
         except Exception as e:
             print(f"Error setting volume: {e}")
 
+    def _cleanup_temp_files(self):
+        """Immediately clean up all active temp files"""
+        with self.tempFileLock:
+            for tempPath in self.activeTempFiles:
+                try:
+                    if os.path.exists(tempPath):
+                        os.unlink(tempPath)
+                except Exception as e:
+                    # Ignore errors - file might already be deleted
+                    pass
+            # Clear the list
+            self.activeTempFiles = []
+
     def cleanup(self):
         """Cleanup resources"""
         if self.isInitialized and self.player:
@@ -259,6 +286,8 @@ class MpvPlayer:
             except:
                 pass
             self.isInitialized = False
+        # Clean up any remaining temp files
+        self._cleanup_temp_files()
 
     def is_available(self):
         """Check if mpv is available"""
@@ -420,6 +449,8 @@ class MpvPlayer:
             except:
                 pass
             self.isPaused = False
+            # Clean up temp files when stopping
+            self._cleanup_temp_files()
 
     def is_audio_file_playing(self):
         """Check if audio file is currently playing"""