JLPT Listening

Both the JLPT has a listening paper. Here's some tools to help.

Free audio books

The best list of free Japanese audio books I've found is here.

Videos

Revise Japanese high school subjects with NHK videos.

Watch news on NHK.

Internet TV

You can watch and listen to real Japanese TV and radio by using KeyHoleTV. Try KeyHoleTV here

Internet radio

A few Japanese radio stations have streaming Internet radio. Listen here.

Skype

Download Skype! Chat to people! I did language exchange for a year over Skype once a week for a year, and often search for random Japanese people to chat to.