当设置某些音频会话参数时，iPod mini控件将被禁用

I'm working on a music visualizer for the iphone/ipad, under iOS 3 you could double tap the home button and get iPod controls. With the latest version 4.1-4.2 these controls are now grayed out when the home button is pressed. I found a similar complaint at I'm working on a music visualizer for the iphon