Issue Playing sound from url - iphone

Question

I am making an Iphone app which have requirement to play sound in a loop. The sound will come from HTTP links like follows:
Link 1
Link 2
Link 3
Link 4
Link 5
Link 6
Link 7
Link 8
Actually there are three button loop,play all and stop. I am able to do play once click all and loop but When i click other button app will crash.How can i solve this problem.My code is below resultArrayFinal is a globle array where all above sound link store.
-(void)replayVedio
{
DataClass *obj=[DataClass getInstance];
NSURL *url = [NSURL URLWithString:obj.soundInfo];
moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:url];
[moviePlayer setControlStyle:MPMovieControlStyleDefault];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(moviePlayBackDidFinish:)
name:MPMoviePlayerPlaybackDidFinishNotification
object:moviePlayer];
[moviePlayer prepareToPlay];
[moviePlayer play];
}
- (void) moviePlayBackDidFinish:(NSNotification*)notification
{
MPMoviePlayerController *player = [notification object];
[[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:player];
if(_globle==1)
{
[self replayAudio];
}
else if(_globle==2)
{
DataClass *obj=[DataClass getInstance];
obj.soundInfo=[resultArrayFinal objectAtIndex:count++];
if (count==[resultArrayFinal count])
count=0;
[self replayAudio];
}
}
Thanks.