Update audio processing state: next_index=670

processing_audio_state.json

@@ -1,5 +1,5 @@
 {
-  "next_download_index": 669,
+  "next_download_index": 670,
   "file_states": {
     "audio/\u5982\u4f55\u6fc0\u6d3b\u5b57\u5e55.wav": "processed",
     "audio/week08 11 space switching.wav": "processed",
@@ -517,6 +517,7 @@
     "audio/7-Adding Grass.wav": "failed",
     "audio/6.8. Wrap Up.wav": "failed",
     "audio/6.8 Glitch Edge Effect.wav": "processed",
-    "audio/6.5 - Eye Pupil.wav": "failed"
+    "audio/6.5 - Eye Pupil.wav": "failed",
+    "audio/6.4. Add Controllers.wav": "failed"
   }
 }