iPod mini controls disabled when certain audio session parameters are set

Question

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 a

Answer 1

Here's where I've got to so far:

AudioSessionInitialize(NULL, NULL, NULL, self);
UInt32  sessionCategory = kAudioSessionCategory_AmbientSound;
AudioSessionSetProperty(kAudioSessionProperty_AudioCategory, sizeof(sessionCategory), &sessionCategory);

devicetwo = alcOpenDevice(NULL);
contexttwo = alcCreateContext(devicetwo, 0);

    //The following two lines are the lines that gray out iPod controls:

alcMakeContextCurrent(contexttwo); 
AudioSessionSetActive(YES);

The iPod controls remain grayed out even once the app quits... And removing the two culprit lines of code result in no sound being produced in the app.