I am selling music online. The music files are big files, eg 2-3gb. A lot customers sometime wouldn't able to completely a huge file at a time for some reason. Currently I set the download limit to 1. If it happened, I need to go into admin to reset the download limit again for that customer.

I wonder how can I tweak zen cart so that the download is based on the user IP? In other words, when the 1st download is occurred at xxx, then the following download will be locked to xxx unlimited time for a day, instead of number of time.

Any comment and thought will be appreciated.