Can you play these streams on your computer? If you can, you can use the PRO mode of
WM Recorder to record them.
If rtsp protocol is not available for you, you can try to change URLs from
rtsp://www.site.com/somedir/somestream.rm
to
http://www.site.com:554/somedir/somestream.rm (RTSP port is used)
or
http://www.site.com:7070/somedir/somestream.rm (PNM port is used)