DarkElf has all but disappeared.
I may have a copy of this somewhere, I'll see if I can dig it up for you. It is a bit roundabout though as it is an executable that reads the flatfile then posts it to an SQL db which the php script then reads.
The flatfile webmap that I have (which you just tried to view - but it is not currently connected to a server db file - so I removed it from the webserver for now...) reads the OP flatfile directly. When I have finished work on the OP serverkit and scripting API and OP SQL server webmap I may look at creating a D3 flatfile webmap, but for now I'll see if I can dig up DarkElf's converter for you.