ControlSend not working when window has focus

[mrboring]

Hi All

I wish to load a Pandora mini player (basically http://www.pandora.com/?cmd=mini is a small popup player) into an IE control. I want a HotKey (Ctrl + Win + Space) to toggle Pause/Play. The following script works as expected as long as the window does NOT have focus. If the window has focus the ControlSend does not get to the Flash player.

The following script has been tested on Vista Business 32 and XP Pro. Any ideas what I might be doing wrong?

#include <GUIConstants.au3>
#include <INet.au3>
#include <IE.au3>

Opt("GUIEventOptions",1)
Opt("GUIOnEventMode", 1)
Opt("SendKeyDelay", 400)

$Form1 = GUICreate("TestProg", 728, 360)
GUISetState(@SW_SHOW)

HotKeySet( "^#{space}", "play" )

_IEErrorHandlerRegister ()
$oIE = _IECreateEmbedded ()
$GUIActiveX = GUICtrlCreateObj($oIE,0,0,728,360)
_IENavigate ($oIE, "http://www.pandora.com/?cmd=mini")

While 1
    Sleep(10)
WEnd

Func play()
    ControlSend($Form1, "", "[CLASS:MacromediaFlashPlayerActiveX; INSTANCE:2]", "{space}")
EndFunc

Thanks in advance.

mrboring