It is a live RTMP stream.

Didn't have any problem downloading and capturing it with Replay Media Catcher 4.0.19. Just fixed time by using the Fix FLV tool of RMC so that the recording can be rewinded and fast forwarded.

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