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We need more details. One library for what software?

With NAS it is easy to provide a central place to store pictures accessed by multiple computers.

I am not sure if iPhoto plays nicely with a remote library that may change between times each computer sees it.

Provide more details on what you are trying to do and people may be able to help.
 
i really want to know this too as I have aperture and have to export projects into my mac pro when i'm on the go with my mbp.
:)
 
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