Here you can have access to the NPR
of the NYC region. It could be useful if you want to improve your
listening comprehension of American English. You can listen to the live
FM broadcast or go their show archives. I personally like Radiolab,
Selected Shorts and Fresh Air among the shows they air.
Here you can have access to the BBC
website, which also airs on the WNYC in the mornings Brussels time. It
could be useful to improve your listening comprehension of British
English. They also have links under "Learning English", where you can
find numerous tools for learners of English as a second language.
Here you can have access to the audio and video streams on The Economist website. This again is a good source for improving British English listening comprehension. I recommend using "The Week Ahead", which is released after 5:00PM every Friday.
Here you can have access to TED, which
is a good source for numerous talks on a very wide range of topics.
Most talks are given by Americans and Canadians, but there are also
other speakers of different nationalities, including some British.