Length of the audiofile
<p>How to find the total duration of the audiofile playing so that i can program to display the contents of the audiofile in viewcontrollers according to the time.</p>

<pre><code>if ([audioPlayer currentTime] ==11){
    [self performSelector:@selector(viewController) withObject:nil]; 

    } else {

        if ([audioPlayer currentTime] ==23){
            [self performSelector:@selector(secondViewController) withObject:nil];  

        }
</code></pre>
