feat: Emit sound play count change event to connected clients after playing a sound

app/services/socketio_service.py

@@ -46,6 +46,14 @@ class SocketIOService:
             {"credits": new_credits},
         )
 
+    @staticmethod
+    def emit_sound_play_count_changed(sound_id: int, new_play_count: int) -> None:
+        """Emit sound_play_count_changed event to all connected clients."""
+        SocketIOService.emit_to_all(
+            "sound_play_count_changed",
+            {"sound_id": sound_id, "play_count": new_play_count},
+        )
+
     @staticmethod
     def emit_credits_required(user_id: int, credits_needed: int) -> None:
         """Emit an event when credits are required."""