Removing all IPA files not in iTunes?

Hi,

I have 588 IPA files on my machine, but only 476 IPA files actually in my Applications section of iTunes

Is there anyway I can remove all of the files that aren't in applications, without having to manually check each one? ;_;

Thanks!

Thank you, that's a really good idea, but my Apps are stored away from my music, podcasts and other media for some reason (different hard drives too)

Thanks, pardon my ignorance but how do I do that? I can change my main media library but my apps just by default download into a set location that I can't seem to be able to change