I see this thread is over a year old, but similar suggestions have been made re: appending the .zip extension more recently.

I’m referring to beginReceivingRemoteControlEvents documented here:
http://developer.apple.com/library/ios/#DOCUMENTATION/EventHandling/Conceptual/EventHandlingiPhoneOS/RemoteControl/RemoteControl.html

I’m not sure if that works w/ a dock, but I’m testing on the device.

- (void) registerMediaPlayerNotifications{
NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];

[notificationCenter addObserver: self
selector: @selector (handle_NowPlayingItemChanged:)
name: MPMusicPlayerControllerNowPlayingItemDidChangeNotification
object: musicPlayer];

[notificationCenter addObserver: self
selector: @selector (handle_PlaybackStateChanged:)
name: MPMusicPlayerControllerPlaybackStateDidChangeNotification
object: musicPlayer];

[notificationCenter addObserver: self
selector: @selector (handle_VolumeChanged:)
name: MPMusicPlayerControllerVolumeDidChangeNotification
object: musicPlayer];

[musicPlayer beginGeneratingPlaybackNotifications];
}

- (void) handle_PlaybackStateChanged: (id) notification {

MPMusicPlaybackState playbackState = [musicPlayer playbackState];

if (playbackState == MPMusicPlaybackStateSeekingForward){
//Stops additional movement of the playback point, returning the playback state to what it was prior to seeking.
[self endSeeking];
return;
}

if (playbackState == MPMusicPlaybackStateSeekingBackward){
[self performSelector:@selector(playPrevious) withObject:nil afterDelay:0.0];
}

if (playbackState == MPMusicPlaybackStatePaused) {

[playPauseButton setImage:[UIImage imageNamed:@"BlackPlayButton.png"] forState:UIControlStateNormal];
[musicPlayer play];
[self pauseFadeMethod];
}
else
{
[musicPlayer pause];
[playPauseButton setImage:[UIImage imageNamed:@"BlackPlayButton.png"] forState:UIControlStateNormal];
return;
}
}
[playPauseButton setImage:[UIImage imageNamed:@"BlackPlayButton.png"] forState:UIControlStateNormal];
}

if (playbackState == MPMusicPlaybackStatePlaying) {
[self performSelector:@selector(playPlaying) withObject:nil afterDelay:0.0];
}

if (playbackState == MPMusicPlaybackStateStopped) {
[playPauseButton setImage:[UIImage imageNamed:@"BlackPlayButton.png"] forState:UIControlStateNormal];
}
}

So I think you could put in the fade code/call into that case w/ an actual ‘pause’ call after the fade.

- (void)remoteControlReceivedWithEvent:(UIEvent *)event
{
switch(event.subtype) {
case UIEventSubtypeRemoteControlTogglePlayPause:
if([UtilAudio isPlaying])
[UtilAudio pause];
else
[UtilAudio continuePlaying];
break;

I have a fade method that will fade out over x seconds. I am looking for a smooth fade out.

Thanks again for trying!

Apple’s example seems to imply this too given their playOrStop call for that event:
https://developer.apple.com/library/ios/#documentation/EventHandling/Conceptual/EventHandlingiPhoneOS/RemoteControl/RemoteControl.html

So if you fade out the music over X seconds and then have a timer that pauses the music after X seconds it seems like it wd work???

http://brainwashinc.wordpress.com/2012/02/06/how-to-build-an-app-ios-iphone-background-audio-controls/

Not sure that helps either.

There’s also audio ducking, but I’m not sure that is what you’re looking for either, but thought I’d mention it.

If you figure it out one way or another, please let us know here. Thanks!