Yes, the issue seems to be intermittent, but is still happening consistently on iOS. I also tried adding delay and other tricks but nothing seems to fix this synchronization issue with the media player. Every few times my client goes to use the app, the audio plays out of sync, unacceptable! I was really trying to avoid rewriting the entire app in Xcode or something just to fix this sync issue, but I guess I have to at this point with no solution in sight.