How to Identify the current download in nsoperation queue
<p>I am new to iphone.I am stuck in my project in some task </p>

<p>i.e I am downloading audio files by hitting url(which contains four book url's it contains book names also ) those will be placed in an operation queue.</p>

<p>Those files are downloaded one after another but I don't know how to identify which book is beeing downloaded because the server gives only data, but how can we identify which book is downloading out of these four books(four url's).</p>

<p>If any body know this please help me...</p>
