Flash ActionScript 3, window.open does not work Safari 4

Hi All,

I am working on a Flash Audio Player that launches in a pop up window allowing the user to browse the site while listening to music. I have tested the application in every browser and Safari 4 seems to be blocking the call.

I am using..

ExternalInterface.call("window.open('/popup_player/','PopupName','toolbar=no,statusbar=no,location=no,scrollbars=yes,resizable=yes,width=800,height=414')");

I have read that this is a known issue, has anyone figured out a workaround for it? It seems that Safari 4 does not recognize a button click in Flash as legitimate way to pop-up a window.