Is it possible to check if an audio existes in audo library using MPMediaItemPropertyPersistentID?
<p>I hope to add audio from audio library to a MPMediaItemCollection.
I hope I can store the MPMediaItemCollection<br>
So I write the MPMediaItemPropertyPersistentID to an array.
When I need to reload and replay the audio MPMediaItemCollection,
I check if the audio's MPMediaItemPropertyPersistentID existes in current audio librabry.</p>

<p>Is it possible?</p>

<p>Or use MPMediaItemPropertyPersistentID to check that is not a good solution.</p>

<p>Thanks</p>
