Loading an image into a client /w FTP


I have a client that is defined to allow networking only (no access to the local file system). I want to load an image from an FTP server and display it on the flash client (developed in AS3). From what I read, I saw that the FTP server must contain a cross domain policy file on the root folder. I currently get an error, a sandbox violation error and access denied to the ftp server. I don’t know what to do.

I placed the crossdomain.xml file that contains:

<allow-access-from domain="*" secure="true"/>

Is anyone familiar with these policy files? What do I have to define in order to managed downloading the image from the FTP server?