Proxy / Cache server for flash content / videos / stream

hi there,
i've tried to search the web, but so far no straight answer...
we are looking to implement/deploy a proxy server to cache and then serve flash content (published in the internet), so we can reduce our internet bandwidth utilization. Windows Server 2008 has Windows Media Services which have a feature to cache windows media content or split live stream. (http://www.microsoft.com/windows/windowsmedia/howto/articles/cache_proxy.aspx)
is there a similar product to deal with flash content?
thanks in advance for all responses!

I'm more or less in the same boat. I've got the admin console
up. I am able to run the vodtest application locally pointing the
video file to rtmp://localhost/vod/sample.flv or using the server
name instead of localhost as in rtmp://mclmedia/vod/sample.flv
I can also load the html and swf file to my xp machine that
has access to the server via our internal network. (DNS isn't
configured yet) But the connectionFailed message appears when I try
to call the videos using rtmp://mclmedia/vod/sample.flv

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