I using Flash Node as a RPC and it works really fine.

When i look at nodes in Drupal with note.get cdn i see my Danish charaters,
Inside my as3 script the text is looks like this "Type: Bagværk / Dessert" when i use

var drupal:NetConnection = new NetConnection();
drupal.objectEncoding = ObjectEncoding.AMF3;

If i hard-code the charters in flash they displays perfect.