title: how to detect .flv movie file URL?
body: <p>when theres a flash video, how can i detect the current flv URL ? viewing the source doesn't reveal it. However, I wonder if theres any approach to figuring out the .flv URL (Where it's hosted at the moment it's being streamed).</p>
  
  <p>I see that there are firefox add on's that does this. I wonder how these work, and whether it can be implemented purely in php and javascript.</p>