diff --git a/youtube_dl/extractor/newgrounds.py b/youtube_dl/extractor/newgrounds.py
index 2ef80bce0..5cb83ba14 100644
--- a/youtube_dl/extractor/newgrounds.py
+++ b/youtube_dl/extractor/newgrounds.py
@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 import json
 import re
 
@@ -8,12 +10,12 @@
 class NewgroundsIE(InfoExtractor):
     _VALID_URL = r'(?:https?://)?(?:www\.)?newgrounds\.com/audio/listen/(?P<id>\d+)'
     _TEST = {
-        u'url': u'http://www.newgrounds.com/audio/listen/549479',
-        u'file': u'549479.mp3',
-        u'md5': u'fe6033d297591288fa1c1f780386f07a',
-        u'info_dict': {
-            u"title": u"B7 - BusMode",
-            u"uploader": u"Burn7",
+        'url': 'http://www.newgrounds.com/audio/listen/549479',
+        'file': '549479.mp3',
+        'md5': 'fe6033d297591288fa1c1f780386f07a',
+        'info_dict': {
+            "title": "B7 - BusMode",
+            "uploader": "Burn7",
         }
     }
 
@@ -22,17 +24,19 @@ def _real_extract(self, url):
         music_id = mobj.group('id')
         webpage = self._download_webpage(url, music_id)
         
-        title = self._html_search_regex(r',"name":"([^"]+)",', webpage, u'music title')
-        uploader = self._html_search_regex(r',"artist":"([^"]+)",', webpage, u'music uploader')
+        title = self._html_search_regex(
+            r',"name":"([^"]+)",', webpage, 'music title')
+        uploader = self._html_search_regex(
+            r',"artist":"([^"]+)",', webpage, 'music uploader')
         
-        music_url_json_string = self._html_search_regex(r'({"url":"[^"]+"),', webpage, u'music url') + '}'
+        music_url_json_string = self._html_search_regex(
+            r'({"url":"[^"]+"),', webpage, 'music url') + '}'
         music_url_json = json.loads(music_url_json_string)
         music_url = music_url_json['url']
 
         return {
-            'id':       music_id,
-            'title':    title,
-            'url':      music_url,
+            'id': music_id,
+            'title': title,
+            'url': music_url,
             'uploader': uploader,
-            'ext':      determine_ext(music_url),
         }