Here’s a great site for students and also for teachers who might be learning the foreign language of the country they work in.  Lyrics Training is an innovative site where you listen to popular songs and complete the lyrics.  There are three levels: Easy and Medium (10% and 25% gapfill respectively) and Hard, in which you must listen and complete the entire song.  There are a variety of songs in English, but you could also brush up on Spanish, French or German to name but a few.