By default flex builder launches its applications through the system default browser. This can easily be changed to launch projects in the stand alone player. This of course assumes that you have the stand alone player installed.

To change these settings go to the ‘Run’ menu and select ‘Run…’. This will bring up a dialog box as shown in the attached screen shot. To start make sure there is a configuration under ‘Flex Application’ in the left panel. It should be named after the current project. If not, right click on ‘Flex Application’ and create a new configuration.

run settings

Once the configuration is complete you can edit its properties. Under the main tab in the right panel, make sure the project you want is selected and that the appropriate application file is specified. Now uncheck ‘Use defaults’. Click ‘Browse…’ next to the Debug text area. This should open up the current project’s bin folder. From there you can select the .swf version of you application file. Do the same for Run and that is it.

Now when ever you run this project it will launch in the stand alone flash player.