It is an RTMP stream.

Didn't have any problem downloading and capturing it with Replay Media Catcher 4.0.19.

You can also download RTMP streams with freeware CooJah + Blader, Orbit Downloader, StreamTransport,...

And you can try to capture RTMP streams in real time while you listen to them using freeware CooJah (without Blader), Orbit Grab Pro.

Related:
FAQ: How to record/download/capture/save Adobe Flash .FLV video RTMP stream from embedded player
How to record rtmp:// flash video .flv stream from embedded Adobe Flash Player