It is pronounced the way that you feel comfortable (as long as it's recognisable). Linus Torvalds, being Finnish, pronounces it "Lee-nukks", but has stated that there's no rule to it.
I don't mind the now "normal" LINE UX, but if I have to hear one more time the word LINE UX repeated to me as if I am a stunted person with a snapped synaptic nerve when I say LEE-NUX the way Linus Torvald's says it, I will give live birth to flesh eating humming birds!