I don't think there is an automated way of doing it without writing some sort of script. And since Aperture isn't exactly cheap, it may be a while until a scripter who buys it hacks around with it to work with your iPod...
No, its not what I ment. I mean that you can sync your iPhoto library with iPod Photo, nano & 5G, so that you can view ur pics on iPod screen, but with Aperture u cannot do that.
I did place Aperture Vault to iPod It is an external HD anyway
You can sync Aperture with any iPod/iPhone via iTunes. In iTunes on the sync tab for photos just select Aperture. That's what I do with my iPod Classic and my iPhone 3G.