How do you share iPod apps without logging in as the other person?
My friend has an app on his ipod that I would like. He sent me the file in an email. However, when I try to sync it to my ipod I get an error that says my computer is not authorized. When I tell it to authorize it says I am already authorized. Can someone please help?
If you have ever had to copy DVDs, you know that it can be a minefield. Get clear about it now!

If your friend has a iPod too download the bump app and you can get pictures apps songs videos or whatever from their ipod
You have to authorize your computer to use his account, but then you could not use your content and your accounts.