slash replace for trubleshoting download

src/utils.py

@@ -17,6 +17,6 @@ def download_track(url, name=None):
         if not name:
             name = url.split(r'/')[-1]
 
-    with open(name, 'wb') as f:
+    with open(name.replace(r'/', '_'), 'wb') as f:
         f.write(r.content)
     return name