A question about Replay Media Catcher (RMC) and RTMP protocol(soundcheck.walmart.com)

I downloaded Replay Media Catcher trial version to see if it manages to capture the videos I want, before I go ahead and purchase it.
I already have WM Recorder, so RTMP is the only reason I need RMC.

The trial version didn't work on the site I tried it on.
The question is - will the full program work?
The site is:

http://soundcheck.walmart.com/

It is RTMP, right?

Thank you!

PS - Sorry if this is really basic stuff, I'm a newbie to all of this.