i very often get this kind of strange feel when listening to old school type electronics, you know that type of bleeping, spacy texture they have. i don't want to describe this feeling for it would be too perverse for this site.
technically you can do it with any program and editor. hell, you don't even need any sample, just draw a note straight in sound forge and do whatever you like with it. you can even sequence it in sound forge (put a sound, delay it, so it overlaps, delete it and so on). lots of work, but if you like that kind of hand-made thing to it, why not.
you know like those radiophonic composers did for their spacey sound to bbc programs and stuff in 60-70.
it's fun enough, but i would like to heat more contrasted densities - since, in principle, this is not drone type of thing. afterall, electronic music is about layering, or so lithuanian musicologists say - i wouldn't care much, of course, if they weren't quite beautiful and young female ones.
but, if you opted for this monochromatic feel, i think a reverbed part/layer (it don't realy matter if it was reverbed, it could have been EQed to sound more spacey) at 2.33 sounds a bit off. but, only if you wanted to sound very much in a rounded flow.