I have a flash project that I am trying to convert to Adobe AIR to be compatible with steam. The flash project uses ExternalInterface calls into Javascript that embeds the swf that are essential to the app (PHP logins, Facebook interactions, etc).
What are my options for getting around a lack of ExternalInterface when using Adobe AIR?
You need to re-implement all this features (login, social network integration) without ExternalInterface. I think, you need to use Steam API for much part of this.