I've been searching for a good tutorial for playing and streaming audio finally I found this which seems to offer an offline audio playing.

in the YMCAudioPlayer class I've commented loading a resource and provided NSURL* generated by a direct link instead like so.

- (void)initPlayer:(NSString*) audioFile fileExtension:(NSString*)fileExtension
{
    //NSURL *audioFileLocationURL = [[NSBundle mainBundle] URLForResource:audioFile withExtension:fileExtension];
    NSURL *audioFileLocationURL = [NSURL URLWithString:@"http://188.95.64.47/AghaninaDownload/Content/per_singer/JFire/Audios/J-FirE_and_Omar_khalid_wlaKelmeh-sample.mp3"];
    NSError *error;
    self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:audioFileLocationURL error:&error];
}

And I've ensured that it's a valid link, but seems not to play on emulator. what have I missed there?

EDIT

It generates the following error

 Error Domain=NSOSStatusErrorDomain Code=-43 "The operation couldn’t be completed. (OSStatus error -43.)

Might be a stupid question, but did you make it play ?

[self.audioPlayer play];

Then I would try this, to ensure your settings are correct :

[self.audioPlayer prepareToPlay];

[self.audioPlayer setCurrentTime:0.0];

[self.audioPlayer setVolume:1.0];

[self.audioPlayer play];

You can also use the delegate of AVAudioPlayer to check if something happens when you play.

Else it might be an URL of format issue.

more