Due to security restrictions this is not possible within AIR. AIR 2.0 will according to rumours have the ability to launch a default viewer for an filetype, but no process running there either.
If this is an absolute necessity, then you might want to consider third party wrappers, like Shu (http://shu-player.com/). Another option would be to use the Merapi bridge (http://www.merapiproject.net/) to connect to a Java app that does the process for you.
that's an absurd,
make a security popup to ask user,
"No, don't allow this proccess request"
"Yes, allow this proccess to start this time"
"Yes, always allow this proccess to start"
"Yes, always thust this air application to start any proccesses"
Flash Player asks user to permit his webcam/mic,
shouldn't we just let users decide?