Messed up the migration, I think?

audio.js

@@ -199,7 +199,7 @@ function loadRemoteAudio(name) {
 
 // check if the content is cached
 function checkCache(type, name, hit, miss) {
-  const req = window.indexedDB.open("cache", 2);
+  const req = window.indexedDB.open("cache", 3);
   req.onsuccess = () => {
     const db = req.result;
     const tx = db.transaction([type], "readonly");
@@ -249,7 +249,7 @@ function initAudio(story, state) {
 // caching stuff here
 
 function storeCache(type, name, blob) {
-  const req = window.indexedDB.open("cache", 2);
+  const req = window.indexedDB.open("cache", 3);
   req.onsuccess = () => {
     const db = req.result;
     const tx = db.transaction([type], "readwrite");
@@ -272,12 +272,12 @@ function storeCache(type, name, blob) {
 function createCache() {
   let idb = window.indexedDB;
 
-  let req = idb.open("cache", 2);
+  let req = idb.open("cache", 3);
 
   req.onupgradeneeded = event => {
     const db = event.target.result;
 
-    if (event.oldVersion == 1) {
+    if (event.oldVersion > 0 && event.oldVersion < 3) {
       db.deleteObjectStore("audio");
     }