Refreshing download address of expired download

When I download a video, I've seen that sometimes the download expires, and if you can't refresh the download address, you will have to download the file from the beginning once again. Internet download manager include this feature (http://www.netmediablog.com/how-to-resume-downloads-on-idm-without-restarting-from-beginning). So, I'm requesting this feature for Free Download Manager.