Any good way to PREVENT mold and condensation on aluminum windows?

I have some very poor quality single pane aluminum windows. (the ones with a little latch you twist 1/4 turn and push out to open. Lately I've been hearing some very bad things about aluminum windows. And I do seem to get alot of condensation, leading to mold growth. (not to mention high energy costs). Well upgrading them just is not an option right now, I don't own the home and the landlord isn't interested in upgrading. I'm wondering if there is any thing I can do to help. For example, I've seen heat shrink plastic you can put on gl, or I've thought maybe there is some sort of thin insulation tape or something that I could put over the aluminum (hopefully while still maintaining visual appeal). Perhaps that combination could help? Or perhaps there is some spray I can put on the windows that will form an invisible barrier against mildew? Just brainstorming. Looking for something cheap that will help.