Only return the cached value if it uses a valid source

ext/mixed/js/audio-system.js

@@ -85,9 +85,11 @@ class AudioSystem {
             const cacheValue = this._cache.get(key);
             if (typeof cacheValue !== 'undefined') {
                 const {audio, uri, source} = cacheValue;
+                if (sources.includes(source)) {
                     return {audio, uri, source};
                 }
             }
+        }
 
         for (const source of sources) {
             const uri = await this._getAudioUri(definition, source, details);