Here's a good source of listening material for more advanced learners:
"Put on your seatbelt and prepare for highs, lows and plenty of twists and turns. BMW, in conjunction with Random House, brings you BMW Audio Books, a unique series of specially- commissioned short stories showcasing the work of some of the finest contemporary writing talent. Each gripping audio book is yours to download for free. Listen to them on your MP3 player, your laptop or ideally, in the car. So sit back, hit play and enjoy the ride."