Update audio processing state: next_index=22

processing_audio_state.json

@@ -22,6 +22,7 @@
     "audio/week07 02 looking at reference.wav": "failed",
     "audio/week07 01 intro what do muscles do.wav": "failed",
     "audio/week06 14 building a low res cage pt2.wav": "failed",
-    "audio/week06 13 building a low res cage pt1.wav": "failed"
+    "audio/week06 13 building a low res cage pt1.wav": "failed",
+    "audio/week06 12 corrective shapes and psd pt2.wav": "processing"
   }
 }