I received a touch from my sister when she purchased an iPhone. Lucky me! Now she has all these apps that she purchased on her account as well as her music. -My question is can I add apps using my account without losing the apps that are currently on the Touch? -Can I change the music/playlist from my iTunes and not lose the apps on the Tough? -Can you provide some search terms to help me find instructions on getting familiar with synch/updating the Touch? Thanks in advance!