AVPlayerItem: KVO for multiple tracks - ios

Question

I've been trying to register my AVQueuePlayer items for KVO at the time of initializing. Below, the items in itemArray have all been properly created with URLs. After the code the queueList is added to a AVQueuePlayer. The player plays fine, with each item playing in order, but only observers for the first item trigger the response. The AVPlayerItemDidPlayToEnd works for all items, however.
I'm fairly new to KVO. Any help would be appreciated.
for(AVPlayerItem *i in itemArray)
{
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(nextSong)
name:AVPlayerItemDidPlayToEndTimeNotification object:i];
[i addObserver:self forKeyPath:#"status" options:0 context:nil];
[i addObserver:self forKeyPath:#"playbackBufferEmpty" options:0 context:nil];
[i addObserver:self forKeyPath:#"playbackLikelyToKeepUp" options:0 context:nil];
[queueList addObject:item];
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context {
AVPlayerItem *thisItem = (AVPlayerItem *)object;
if ([keyPath isEqualToString:#"rate"]) {
if ([self.player rate]!=0) {
[self setPlayButtonAsPlaying:YES];
NSLog(#"PLAYING");
}
else {
[self setPlayButtonAsPlaying:NO];
NSLog(#"PAUSED");
}
}
else if ([keyPath isEqualToString:#"status"])
{
if(thisItem.status==AVPlayerItemStatusFailed)
{
NSLog(#"failed");
[self setPlayButtonAsPlaying:NO];
[player pause];
}
}
else if ([keyPath isEqualToString:#"playbackBufferEmpty"])
{
if(thisItem.playbackBufferEmpty)
{
[player pause];
[self setPlayButtonAsPlaying:NO];
}
}
else if ([keyPath isEqualToString:#"playbackLikelyToKeepUp"])
{
if(!thisItem.playbackLikelyToKeepUp)
{
[player pause];
[self setPlayButtonAsPlaying:NO];
}
else
{
[player play];
[self setPlayButtonAsPlaying:YES];
}
}
}
EDIT: I also have a button which triggers this command, which I use to test the state of these properties.
NSLog(player.currentItem.playbackBufferEmpty ? #"Yes" : #"No");
NSLog(player.currentItem.playbackLikelyToKeepUp ? #"Yes" : #"No");
Specifically, playbackLikelyToKeepUp is false (which I manually cause by disconnecting my wifi). Interestingly, the playBackBufferEmpty is also false.