AVAudioSession not working as described by Apple

[god0fgod]

I've found a bug which is probably Apple's fault. I need a way around it.

My game has 3 background songs. I would like the game to set the background music to off when there is ipod music playing, else it will play the last played piece of music. When the muser changes the music with the ipod music on, the ipod music should go away and the background music plays. The problem is, the *second time* I try to do this (Changing the music from ipod to in-game) the first song will play but the other two will not.

This is stupid behaviour and it wont work any way I try to solve the problem. Here's my current code....

In the drawRect loop:

//Music toggle
						if(music_active == 0){
							[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategorySoloAmbient error:NULL];
							[[AVAudioSession sharedInstance] setActive:YES error:NULL];
							[background_music play];
							music_active++;
						}else if(music_active == 1){
							[background_music pause];
							[background_musicB play];
							music_active++;
						}else if(music_active == 2){
							[background_musicB pause];
							[background_musicC play];
							music_active++;
						}else{
							[background_musicC pause];
							music_active = 0;
						}

In the startAnimation method:

UInt32 size,result;
		size = sizeof(result);
		AudioSessionGetProperty(kAudioSessionProperty_OtherAudioIsPlaying,&size,&result);
		if(!result){
			[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategorySoloAmbient error:NULL];
			[[AVAudioSession sharedInstance]  setActive:YES error:NULL];
			[background_music prepareToPlay];
			[background_musicB prepareToPlay];
			[background_musicC prepareToPlay];
			if(music_active == 1){
				[background_music play];
			}else if(music_active == 2){
				[background_musicB play];
			}else if(music_active == 3){
				[background_musicC play];
			}
		}else{
			music_active = 0;
		}

In the stopAnimation method:

[background_music stop];
		[background_musicB stop];
		[background_musicC stop];
		[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryAmbient error:NULL];
		[ [AVAudioSession sharedInstance] setActive:NO error:NULL];

In the initWithCoder method:

[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategorySoloAmbient error:NULL];

This method also loads the sound files and sets the number of loops to -1. It uses AVAudioPlayer, of-course.

This problem is annoying me because I didn't find it in my testing before I submitted the game to Apple. I need to get it fixed for an immediate update when the game is approved or to re-submit if it is rejected. I don't see what I'm doing wrong. I'm following the documentation perfectly. It must be Apple's fault unless I'm missing something?

Thank you for any help.

[god0fgod]

Basically, startAnimation is being called and result will be false because I wont play anything at first. Then stopAnimation is called before startAnimation is called again with result as true. I then switch the music which runs through the code in the drawRect method. It works. stopAnimation is called again before startAnimation is called with result as true for the second time. Switching the music then fails