silly question..... i've just downloaded an app from the app store to my computer via itunes. how do i get it to my ipod touch? if i click on 'syncing applications' in itunes, it warns me that all ipod apps and data will be lost and replaced with my itunes apps. i only have 1 app in itunes and tons on my touch that i want to keep. so how? i normally go straight from the app store to my device, not through the computer. thanks.