I know TunerCat will open a .lt1 file... or used too?

There is a tuneconv program I've been told that will convert .lt1 to bin but never used it? It can be found here:

http://carprogrammer.com/Z28/PCM/Tools/

Not sure how long that link will last, I think it's a website error and should not be showing those files as there are TunerCat .tdf files there as well...