Todd Beuckens has created this site with more than 1000 listening activities with accents from all over the world, including videos, interviews, news, songs, talking points, listening games, etc. with comprehension exercises, quizzes, and lots of different activities.
I learnt about it thanks to the blog "Enjoy Learning English " , which I usually follow. I must say that the site I´m talking about is one of the best I´ve seen on the web.
Everything is ready to use !
CLICK on the link http://www.elllo.org