The following websites are great sources to improve your listening skills

1)http://www.eslvideo.com/
2)http://www.esl-lab.com/
3)http://www.voanews.com/english/news/
4)
http://www.breakingnewsenglish.com

5) listen to news reports
http://edition.englishclub.com/category/listening-news/

6)Listen to these podcast and dothe follow-up exercises to improve your listening
http://www.listen-to-english.com/podcasts

7)Listen and have fun
www.lyricstraining.com

8)Watch videos, fill in the blanks, test your speaking...
http://tr.englishcentral.com/videos