http://www.fileinfo.net/extension/ax
Is it not possible that ishmael.ax is a reference to a video file name?
And is it ishmail, or ishmael? ishmail is also a tech term.
Not being computer savvy at all, I didn't even know that such a thing existed, until you posted the link and I still don't know what that is, after looking at it.
Cho was insane, there's no way any of us are ever going to know what it means, unless he wrote about somewhere and somebody tells us what he meant.