i had the same problem with the codec 75 go to this site and download the patch it works gr8 http://www.keystonelearning.com/company/faq/faq.asp?id=40 :) 
Feedback
Is there any most splsmeit way to call just one system API, then make some sound ?The funny thing is that I tried implementation in TTPhotoViewController, when some sample used it, it can not make any sound. But for another cases, implemented in my sample, it make sound.Strange thing !
Feedback