The digital download will NOT download and reside on your computer, even though you've BOUGHT the license. It is called an "UltraViolet" digital copy, and can only be watched online through Flixter. I just learned this when I went to reserve a copy of
Harry Potter & the Deathly Hallows, Part 2. A review on Amazon.com explains it better than I can:
http://www.amazon.com/review/R3UIUNTBP6BE8Z
From what I understand, it is not compatible with iTunes or your Mac, iPhone or iPad if you have any of those. I'll download the digital movie through iTunes instead. I have a MiFi and pay for bandwidth per gig, and watching this movie just once would really eat up that bandwith! Buyer, beware! I guess a lot of digital downloads are going this way...