Podcasts: http://a4esl.org/p/
Links to many different podcasts (mp3 files 1-3 minutes long), including news and stories. Some of the podcasts are fast and more difficult to understand, some are slower.
Online Dictations: http://www.fonetiks.org/dictations
This is a great way to practice spelling and punctuation. You will hear each dictation 4 times and then see a transcript so that you can check your answers.
Movie Trailers: http://www.english-trailers.com
A great website with around 80 movie trailers. There are "before you listen", summary and "dictation" activities as well as a quiz and the full transcript. You can choose between "easy", "medium", and "difficult" trailers.