It's actually a stream of 94.7's HD2 channel. Be warned, though, because you can also hear "HFS 97.5" at the same time. My guess is WNEW will get 94.7 HD2 all to itself next year.
http://player.streamtheworld.com/liveplayer.php?callsign=WIADHD2
http://player.streamtheworld.com/liveplayer.php?callsign=WIADHD2