Update audio processing state: next_index=38

processing_audio_state.json

@@ -38,6 +38,7 @@
     "audio/week05 17 pose reader cleanup.wav": "failed",
     "audio/week05 16 pose reader doing the other side.wav": "failed",
     "audio/week05 15 pose reader on character creation.wav": "failed",
-    "audio/week05 14 pose reader simple example creation.wav": "failed"
+    "audio/week05 14 pose reader simple example creation.wav": "failed",
+    "audio/week05 13 pose reader simple example issue and solution.wav": "processing"
   }
 }