Paperboy

In regards to the 3rd question, all I can say is maybe. In order for my 360 to detect anything, I had to use MP11 to import my movies into it's library. I haven't yet had any luck just setting up a shared folder and getting the 360 to detect it. The way I see it, unless the airport has the ability to properly setup shares with a 360, I doubt you'll be able to stream the files w/o a computer. Then again, I don't know if your mac can view devices plugged into the router as devices directly plugged into it. But if it can, you might be able to set up the drive that way. As mentioned above, you could always plug the hard drive directly into the 360 but I don't think thats what you were going for.