How do I download an .MP4 file that constantly fails?

http://ift.tt/1iZHv9S

I am trying to download a large Mp4 (which I paid for). The download fails on Firefox and the resume function does not resume, it starts over and fails again.

The download indicates ‘interrupted’ in Internet Explorer and the same thing happens with its resume function. I have temporarily disabled my malware software, turned off my firewall, shut down all other non essential processes, updated Internet Explorer and Firefox.

No luck. Running Windows 8 on a laptop and have been at this ALLLLLLLL day.

The file is a download of a DVD which I purchased directly from the site who created it.

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