iOS mutable json - ios

Question

i am trying to do a radio app, i want to get the album art from itunes, am about to finish but i need some help here, i dont know how to make my json request take my metadata variables everytime the song change, here is my code in .m
#import "EDViewController.h"
#define STREAM_URL #"http://4893.live.streamtheworld.com:80/ROCK_FMAAC_SC"
#interface EDViewController ()
#end
#implementation EDViewController
- (void)viewDidLoad {
radio = [[Radio alloc] init:#""];
[radio connect:STREAM_URL withDelegate:self withGain:(1.0)];
playing = YES;
[super viewDidLoad];;
NSMutableString *urlString = [NSMutableString stringWithFormat:#"https://itunes.apple.com/search?term"];
NSURL *url = [NSURL URLWithString:urlString];
NSData *data = [NSData dataWithContentsOfURL:url];
NSError *error;
NSMutableDictionary *artwork = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error];
NSMutableArray *results = [artwork objectForKey:#"results"];
NSDictionary *album = [results objectAtIndex:0];
NSString *artalbum = [album objectForKey:#"artworkUrl100"];
NSURL *urlOne = [NSURL URLWithString:artalbum];
NSData *newData = [NSData dataWithContentsOfURL:urlOne];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:(CGRectMake(0, 69, 320, 325))];
[imageView setImage:[UIImage imageWithData:newData]];
[self.view addSubview:imageView];
UIImageView *imageView2 = [[UIImageView alloc] initWithFrame:(CGRectMake(95, 167, 130, 130))];
[imageView2 setImage:[UIImage imageWithData:newData]];
[self.view addSubview:imageView2];
}
- (IBAction)play {
[radio resume];
}
- (IBAction)stop {
[radio updatePlay:NO];
}
- (IBAction)pause {
[radio pause];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark -
- (void)uodateBuffering:(BOOL)value {
NSLog(#"delegate update buffering %d", value);
}
- (void)interruptRadio {
NSLog(#"delegate radio interrupted");
}
- (void)resumeInterruptRadio {
NSLog(#"delegate resume interrupted Radio");
}
- (void)networkChanged {
NSLog(#"delegate network changed");
}
- (void)connectProblem {
NSLog(#"delegate connection problem");
}
- (void)audioUnplugged {
NSLog(#"delegate audio unplugged");
}
- (void)metaTitleUpdated:(NSString *)title {
NSLog(#"delegate title updated to %#", title);
NSArray *chunks = [title componentsSeparatedByString:#";"];
if ([chunks count]) {
NSArray *streamTitle = [[chunks objectAtIndex:0] componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:#"'-"]];
if ([streamTitle count] > 1) {
titleLabel.text = [streamTitle objectAtIndex:1];
}
NSArray *streamArtist = [[chunks objectAtIndex:0] componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:#"'-"]];
if ([streamArtist count] > 1) {
test100.text = [streamArtist objectAtIndex:2];
}
}
}
#end
As you can see my metadata info is at the end of my code and my json request its almost at the top.`