Hello all. I'm doing some research on iPod's operating system, but so far I've found it really hard to find information about it. I hope someone could explain me how it works or perhaps provide a URL where all my questions (or many ) could be answered. Basically I want to know what kind of OS it has, who builds it, how it is structured inside, and so on. Any information will be very appreciated, and I would love it if you could also relate it to the hardware in terms of how they work together. Well, thanks in advance. Cheers!