Update audio processing state: next_index=356

processing_audio_state.json

@@ -322,6 +322,7 @@
     "audio/Loose Group of Fish.wav": "processed",
     "audio/Local Vector Field.wav": "processed",
     "audio/Liquid Simulation on Houdini.wav": "processed",
-    "audio/Lighting and Material Exploration.wav": "processed"
+    "audio/Lighting and Material Exploration.wav": "processed",
+    "audio/Lesson_9.2.wav": "processing"
   }
 }