add file download finish log

src/jensen.js

-import { Logger as internalLogger } from './utils/utils';
+import {Logger, Logger as internalLogger} from './utils/utils';
 
 const QUERY_DEVICE_INFO = 0x01;
 const QUERY_DEVICE_TIME = 0x02;
@@ -723,7 +723,7 @@ Jensen.prototype.getFile = async function (filename, length, ondata, onprogress)
 
     function removeAudio() {
         const audio = document.getElementById('test_audio');
-        audio && audio.remove();
+        audio && audio.pause() && audio.remove();
     }
 
     document.addEventListener('visibilitychange', visibilitychange);
@@ -735,6 +735,7 @@ Jensen.prototype.getFile = async function (filename, length, ondata, onprogress)
             ondata(msg.body);
             if (flen >= length) {
                 document.removeEventListener('visibilitychange', visibilitychange);
+                Logger.info('file download finish.')
                 removeAudio();
                 // return OK indicates all file blocks received
                 return 'OK';
@@ -742,6 +743,7 @@ Jensen.prototype.getFile = async function (filename, length, ondata, onprogress)
         } else {
             document.removeEventListener('visibilitychange', visibilitychange);
             removeAudio();
+            Logger.info('file download fail.')
             ondata('fail');
         }
     };