What operating system are you using?
One must have WM Player version 7.0 or newer installed also.
When you say it will "not record off a url", are you referring to just one site
or that it will not record anything at all from any site.
WM recorder will not work with media protected by Digital Rights Management (DRM)
or "Real Player" streams either.
You might visit this site "All-Streaming-Media"
and find some additional information or report your problems.
The only easy day was yesterday.
...some do, some don't; some will, some won't (WR)