Thanks Rob,
Is it likely that apple will build in a new tab into the iTunes sync screen for all of the apps you buy and each one could have its own little section where you could put in files accessible only to that app, kind of like the tab for e-mails, contacts, and stuff? This would seem to be the easiest solution to me, but then again I have absolutely no experience programming. It would be hard to imagine that someone at Apple hasn't thought of this, but then again they might just leave the feature off to spite me like so many other features I have wanted.