Craig, you don't listen. The adapter works for mini-jack to cinch, for example the headphone output of your iPod to a stereo amplifier, but the other way is just horror. You've got a good mike, why don't you make up your mind and buy either a Juicedlink or Beachtek or a Tascam? Or you could go from XLR to mini-jack directly, with a short cable (wired in the right way, a friend of mine built such an adapter for himself, works) no problem. And then, your mixer is probably AC-bound, how practical is that?
I understand, you have not much money. Then take your time with your limited equipment and concentrate on the imagery. Don't try to buy [i]everything[/i] for 500 $. There are good shorts without any dialogue. Be patient. Do something now. Wait for the occasions to buy more and better (or the right) things. As an amateur (or beginner, if you find [i]amateur[/i] insulting), you will never be able to have exactly the equipment you are dreaming of. The enemy of art is the absence of limitations.