Hey,

A great way to learn japanese is to listen to the language in the background while studying it. At least it works good for me.
Proper pronounciation is the hardest part in my opinion, so listening to native speakers and repeating what they say helps me alot.

Anyway, I've found a few links to some streams - feel free to add more to the list:
Radio Locator - Japanese stations
Onsen Internet Radio (WMP and RM streams)
Radio Japan (WMP stream)

If someone know any live TV streams, please provide a link to those as well.

Edit:

Here are some links to live TV streams:
Internet Interactive TV | website
Fuji News Channel (Real Video) | High | Low |
Impress Stream | High
JAL TV | High

For more, look here

Download Real Alternative 1.43 and Media Player Classic here

Sayõnara

or you download some fun japanese music/variety programs, like SMAPxSMAP, Popjam, Music Station, Utaban, Music Fighter, HeyHeyHey, Kinki Kids, etc, with bittorrent.

Thanks for the tip. I'll look for some shows now