When I first got my phone, I synced with iTunes and it transferred 5 apps from my phone to my hard drive. Since then I've downloaded 10 more apps, but have not synced. Today a friend emailed me an app file he's been working on. I need to move it to my phone. Can I run the "Sync only selected apps" in iTunes and move that file to my phone? Or will it try to literally match what's on my hard drive to my phone, thus deleting those other 10 apps? A dumb question, I realize, but I don't want to lose those apps. The reason I'm paranoid is that unlike Windows, OSX overwrites folders when you place one on top of the other, whereas Windows merges them. I wasn't sure if iTunes/iPhone sync'ing worked the same way. Thanks!