Need software/data conversion help for the 901 DVD set, Trying to modernize and upload! Options

[Dr Evil]

I recently bought video plans to build a vapor blast cabinet off of a site called Gumroad. It was pretty easy. I have had issue with selling the DVD at times getting it to foreign places with ease and for a reasonable shipping price, so digital sales was always a desire. I have never been able to get the data off of the DVDs to copy digitally and I am not savvy on how to go about reformatting the data so I can upload. Here is what I know:

There are two DVDs. Each DVD, when I open it on my PC and do not let it autoplay has two folders in it; Audio_TS and Video_TS. Opening up either folder leads to large amounts of files with extensions I am not familiar with; _TS, .BUP, .IFO, and some alphanumeric dash something-or-others.

Since the beginning, I have only been able to save these two folders and have had to use various burning software to copy them. The burning software didnt ever seem to care that I click on the Video or the Audio_TS and would start and complete its actions without issue. Now, I am trying to upload this data to the Gumroad site so I can sell digitally and it will not just accept this format, it wont upload the folders but will upload the files. I do not think that will work for anyone, though.

TL;DR - I need to convert the data on my DVD set to a file type that I can upload to Gumroad and that people could then click on and it would just play. HELP!