Embed Fonts

Hi,
I have a dynamic text box with the font set to Sydnie. Not a particularly common one, hence why I need to embed it. I have embedded the whole font list and when I preview my movie, the text is displayed using its correct font…however, the minute I close Flash and refresh the window, the text box reverts to a default times new roman style font.
How do I overcome this?
Thanks in advance,
Andy