Thank you for your quick and very useful response. I tried everything that you said and it did not work but I noticed that when I downloaded your game and played the audio was delayed on my phone. (Very nice game by the way, the soundtrack is awesome.)
I also noticed that when I compiled this Capx provided above and wrapped it up in cocoonjs that the audio delay between the two boxes was identical.
So, I have come to the conclusion that the audio delay problem is in my phone itself.
For those interested I have an HTC Droid DNA Android Smartphone.