I am new to Apple TV (2nd Generation) and was wondering...if I am home sharing my music, movies and pictures, does my MacBook have to be on to access my account? Reason I ask is that I set everything up yesterday and when my MacBook went into sleep mode my account disappeared under the Computer tab on Apple TV. Would the Remote app turn on my account on my iPad if I do home sharing there as well? Any information is greatly appreciated!! Thanks!