> I observed that if a site is being copied,, and a
> file is linked at more than one pages,,,, but with
> different URL(s). 
> 
> It downloads that same as many times as it is linked
> with different pages, or with different URL(s) at
> one page, it is linked,,,

site.com/A/test.wmv and site.com/B/test.wmv may be the same file or may be
totally different but the same size.  There's no way to tell except by
downloading and then comparing them.

> My point is this, it should check within its
> software folder, whether the same is already
> available or not, it available it msut link it
> instead of re-downlaoding.....

If sites.com/A/page.html and sites.com/B/page.html both links to
/files/test.wmv then only one version of test.wmv should be downloaded while
there will be two versions of page.html.