Update audio processing state: next_index=78

processing_audio_state.json

@@ -78,6 +78,7 @@
     "audio/week03 06 quick skinning.wav": "failed",
     "audio/week03 05 eyes.wav": "failed",
     "audio/week03 04 shoulders head and jaw.wav": "failed",
-    "audio/week03 03 connecting feet and legs.wav": "failed"
+    "audio/week03 03 connecting feet and legs.wav": "failed",
+    "audio/week03 02 connecting hands to arms.wav": "processing"
   }
 }