I bought my child an ipod nano for Christmas. Neither of us have any experience with ipods at all. I bought an app from the ipod store. It's an "ipa" file. I now realize I have no app section on my ipod in which to install this app. Would this file go under the Game section, or do the ipa files only play on iPod Touch? I had been thinking apps = games and iPod Touch = iPod Nano, but I realize from a little on-line searching that they are different, but I am still uncertain of the differences and what exactly I can add to my iPod Nano (if not ipa files, then what kind?) Thanks for your patience with my ignorence and any help you can give.