Check out
this link for info on how to breed crix.
I modified it a bit, since that set-up will produce 1000's of crickets a week, and you won't need that many. I kept about 3 dozen adult crickets in my breeding tub, and added 6-10 medium sized crix every week to keep enough breeders in there - once they reach breeding age they die pretty quickly after that. That many gave me a couple hundred a week(I gave some away). I also used a smaller tub - not the rubbermaid shoebox, the one a little bigger than that one - forget what it's called... Also, I didn't bother with water, just fresh lettuce and oranges every couple days.
Anyways, that link will explain all the details, just change some of the sizes and it doesn't require a lot of work. BUT, BE PREPARED FOR ESCAPES! Put them somewhere fairly warm where it won't matter if a couple get out and chirp, because no matter what, some
WILL get out and if it's, oh say, in your bedroom, it'll drive you nuts(did you know they can burrow under carpet...?) - trust me...