To access this page, you'll need to go to the server settings pages using a web browser. If you have not changed the default settings, this page is normally found at the following location: http://your-ip:port/configpage/index.htm
where "your-ip" is the IP address of the device where the server is running and port is the port number of the HTTP server (9000 by default).
The URL http://127.0.0.1:9000
will also work on most computers.
Once can see the server settings pages in your browser, click on the icon that looks like a Wrench. You should then see a Flash link under Media Browser.