Theres already zip, unzip, for the ipod. There's mail features. But 1.1.4 had Finder, and that let you send ANY file VIA email. So, Would it be hard to make a app where u can browse your ipod, (like iCommand), select a file, email it to someone.. So they can open it.. maybe edit it.. email it back, to ipod, and u can place it whereever. Ifinder had this feature, just not the receive.