I'm not a current Apple TV owner so I'm hoping someone could help me out and tell me if my logic is flawed here... I own a MBP. I have a small-ish collection of movies and shows mostly in .avi formats which all run perfectly on it. In Quicktime, if I file>save as and save them as a .mov, I can get them to organize and run in my iTunes library. Will I then be able to stream them via the new Apple TV to my big screen? As far as audio goes, I'm assuming that anything I'm streaming fro my computer will run through the ATV to my home TV via the optical cable and come out whatever speakers I have connected to the TV?