On the faq for the current preview release, http://unity3d.com/unity/preview/faq it says that while networking is not currently supported for flash compilation, we can write our own in AS3 using the Flash API. I can't seem to find the docs for this API or figure out the right way to work in both AS3 and Unity. Can anyone point me in the right direction?
Take a look at http://playerio.com/. Very nice and relatively easy network multiplayer library with both flash and unity support.
Here's a link to a thread on the Unity3D forums, where some progress seems to be being made towards the end:
I'm having the same issue I'm currently creating a wrapper class for Scoreoid follow are blog I hope to have it done today.
About Scoreoid - http://www.scoreoid.net/ Scoreoid, developed by game developers for game developers, is a non-restrictive, reliable and easy to use gaming platform designed to handle but not limited to scoring, leaderboards and game management, including advanced functions such as platform content awareness, for multi-platform games.