Audioscrobble on wordpress

Warning: file_get_contents(http://ws.audioscrobbler.com/2.0/?method=user.getrecenttracks&user=bigbrova&api_key=2f1a09f6bb6c9d4a89c67c7a7805a215&limit=3) [function.file-get-contents]: failed to open stream: Permission denied in /home/www/aoizora.org/bobola3as/wp-content/plugins/lastfm-rps/simplexml.class.php on line 46

    This username does not exist, or the feed service is down.