How to use rtmpdump with this video

[jrn]

Hi,

I am trying to grab this video from an online education site I subscribed to. After logging in I can watch these videos which are embedded using JWPlayer.

This is the code snippet for one of the videos:

<object width="480" height="360" type="application/x-shockwave-flash" data="/connect/static/swfs/player.swf" bgcolor="#000000" id="mediaplayer" name="mediaplayer">
 <param name="allowfullscreen" value="true">
 <param name="allowscriptaccess" value="always">
 <param name="seamlesstabbing" value="true">
 <param name="wmode" value="opaque">
 <param name="flashvars" value="netstreambasepath=http%3A%2F%2Fkwconnect.kw.com%2Fconnect%2Fuser%2FGetCourse.do%3FmemberId%3D29%26partId%3D80%26partId%3D80%26partId%3D80&amp;id=mediaplayer&amp;autostart=true&amp;streamer=rtmp%3A%2F%2Fcp45142.edgefcs.net%2Fondemand%2F45142%2F&amp;file=80_media%2F08Apr08_142151335%2FPwrP_605A_155.flv&amp;provider=rtmp&amp;controlbar.position=bottom">
</object>

I am super new to rtmpdump - just installed it on my MacBook yesterday.
After trying around and following some tutorials I have no more ideas on how to use rtmpdump to save this video locally.
I'd really appreciate it if someone could point me into the right direction on how to correctly use rtmpdump - which parameters/values do I need to supply?

Thanks a lot,

jrn