http://www.brainpickings.org/2014/09/11/jeff-buckley-interview/
not a long interview/discussion being about 8 minutes, but you do get some more insights into what Jeff thought about. This seems to have taken place sometime in 1995. I forget the exact timeline, but if I recall correctly, he was still in Jersey (or NYC) at this point.
The interviewer Luisa Cotardo I guess has a tumblr page she keeps. I'd be curious what other interviews/recordings she may have put up there or on the brainpickings site.