I tried to run a FlexUnit test class, and I was upset to discover it launches Flash CS 5.5 in order to do so, as I currently don't have a license for flash on my Mac.
If it needs a flash player, I would rather it launch the Flash Player Debugger app I have always used for launching .swf files...
so my questions are basically:
1) Why does it launch Flash in the first place?
2) Where can I configure an alternative Flash Player app if that's what it's after?
The latest Astella EAP launches FlexUnit tests using OS default application for *.swf files. So you should just map *.swf to standalone Flash Player or browser. The next Astella EAP will have an option in FlexUnit run configuratoin - what application to use for running tests, but the default selection will be 'Use system default app'.