diff --git a/package.json b/package.json
index b044dba..5282860 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "redux": "^3.5.2",
     "redux-saga": "^0.11.0",
     "redux-thunk": "^2.1.0",
-    "redux-vcr": "0.1.12",
+    "redux-vcr": "0.3.1",
     "reselect": "^2.5.3",
     "soundbank-reverb": "^1.1.2",
     "svg-inline-loader": "^0.6.1",
diff --git a/src/actions/index.js b/src/actions/index.js
index cc79a18..2f5b03a 100644
--- a/src/actions/index.js
+++ b/src/actions/index.js
@@ -8,6 +8,7 @@ export const TWEAK_AXIS_PARAMETER = 'EFFECTS/TWEAK_AXIS_PARAMETER';
 
 export const ADD_NOTE = 'NOTES/ADD_NOTE';
 export const REMOVE_NOTE = 'NOTES/REMOVE_NOTE';
+export const REMOVE_ALL_NOTES = 'NOTES/REMOVE_ALL_NOTES';
 
 export const UPDATE_OSCILLATOR = 'OSCILLATORS/UPDATE_OSCILLATOR';
 
@@ -63,6 +64,10 @@ export const removeNote = ({ value }) => ({
   value,
 });
 
+export const removeAllNotes = () => ({
+  type: REMOVE_ALL_NOTES,
+});
+
 export const updateStage = ({ stage }) => ({
   type: UPDATE_STAGE,
   stage,
diff --git a/src/reducers/effects.reducer.js b/src/reducers/effects.reducer.js
index 5905b51..f3ebfc5 100644
--- a/src/reducers/effects.reducer.js
+++ b/src/reducers/effects.reducer.js
@@ -1,5 +1,5 @@
 import { createSelector } from 'reselect';
-import effectDefaultOptions from '../data/effect-default-options.js';
+import effectDefaultOptions from '../data/effect-default-options';
 
 import {
   DEACTIVATE_EFFECTS,
@@ -104,5 +104,5 @@ export const axisControlSelector = createSelector(
 
 export const otherAxisNameSelector = createSelector(
   otherAxisName,
-  (name) => name
+  name => name
 );
diff --git a/src/reducers/notes.reducer.js b/src/reducers/notes.reducer.js
index f1ebc84..c70e925 100644
--- a/src/reducers/notes.reducer.js
+++ b/src/reducers/notes.reducer.js
@@ -1,4 +1,4 @@
-import { ADD_NOTE, REMOVE_NOTE } from '../actions';
+import { ADD_NOTE, REMOVE_NOTE, REMOVE_ALL_NOTES } from '../actions';
 
 const initialState = [];
 
@@ -13,6 +13,10 @@ export default function notesReducer(state = initialState, action) {
       return state.filter(note => note.value !== action.value);
     }
 
+    case REMOVE_ALL_NOTES: {
+      return [];
+    }
+
     default:
       return state;
   }
diff --git a/src/utils/build-middleware-array.js b/src/utils/build-middleware-array.js
index 0be6f2b..56bf2f1 100644
--- a/src/utils/build-middleware-array.js
+++ b/src/utils/build-middleware-array.js
@@ -4,23 +4,34 @@ import {
   createRetrieveHandler,
   createRetrieveMiddleware,
   createReplayMiddleware,
+  getQueryParam,
 } from 'redux-vcr';
 
 import { firebaseAuth } from '../data/firebase';
 
 import {
   COMPLETE_ONBOARDING,
+  removeAllNotes,
 } from '../actions';
 
 
+function silence(dispatch) {
+  dispatch(removeAllNotes());
+}
+
 export default function buildMiddlewareArray({ adminMode = false } = {}) {
   const middlewares = [];
 
   if (adminMode) {
     const retrieveHandler = createRetrieveHandler({ firebaseAuth });
 
+
     middlewares.push(
-      createRetrieveMiddleware({ retrieveHandler, requiresAuth: false }),
+      createRetrieveMiddleware({
+        retrieveHandler,
+        requiresAuth: false,
+        initialCassetteId: getQueryParam({ param: 'cassetteId' }),
+      }),
       createReplayMiddleware({
         maximumDelay: 2000,
         // The cassette was not recorded in admin mode, but we need to replay
@@ -29,6 +40,8 @@ export default function buildMiddlewareArray({ adminMode = false } = {}) {
         overwriteCassetteState: {
           isAdmin: true,
         },
+        onStop: silence,
+        onEject: silence,
       })
     );
   } else {
diff --git a/src/utils/web-audio-manager.js b/src/utils/web-audio-manager.js
index 6a16b64..c565882 100644
--- a/src/utils/web-audio-manager.js
+++ b/src/utils/web-audio-manager.js
@@ -14,7 +14,7 @@ import {
   getLogarithmicFrequencyValue,
   getOctaveMultiplier,
 } from './web-audio-helpers';
-import effectDefaultOptions from '../data/effect-default-options.js';
+import effectDefaultOptions from '../data/effect-default-options';
 
 
 // eslint-disable-next-line no-undef
@@ -45,7 +45,7 @@ In the above example, the signal routes through a filter and a delay,
 avoiding the other effects (distortion and reverb).
 */
 
-export const webAudioManagerFactory = context => {
+export const webAudioManagerFactory = (context) => {
   /*
   Store all currently-playing oscillators here.
   Shape is:
@@ -139,8 +139,7 @@ export const webAudioManagerFactory = context => {
   // return the WebAudioManager itself.
   return {
     stopAllOscillators() {
-      // TODO: Look into whether I need to kill the gains created for each osc.
-      activeOscillators.forEach(oscillatorArray => {
+      activeOscillators.forEach((oscillatorArray) => {
         oscillatorArray.forEach(({ oscillator, output }) => {
           // Add a brief release, to avoid clipping
           fade({