Replay Media Catcher works on that site (for me). Any rtmp capture program should work.
I'm using v3.01 of RMC. I didn't like the change (in v3.02) to a network interface driver (much like
Jaksta uses). You would think that a network driver would be more powerful, but it is also less system-friendly and less compatible. RMC v3.01 is a much more elegant method, in my opinion.
So, if you're using v3.02, maybe try v3.01.