Apps requesting access to microphone (iOS7)

Question

This may be something with iOS 7, but I'm seeing our apps ask for access to the microphone at launch. What triggers this? We aren't using the microphone in the app. At least not that we are aware of.
Edit: We have 12 apps in the App store. All of them launch with a warning requesting microphone access in iOS 7. You can choose don't allow because the apps don't use the microphone, but we need to figure out how to remove this. Our apps range from air 3.5 to 3.7 I believe. It's affecting all them in the same way. They all show up under the privacy tab in iOS 7 with a toggle.

Answer 1

This should be fixed in the latest air update. http://forums.adobe.com/thread/1281043?tstart=0
3613819 - [iOS7]on using Sound.play app asks permission for accessing the Microphone even when microphone API is not used in the app.
I updated air and tested in a new empty project. I still get the microphone request popup.
I'm targetting swf version 21.
CTAirSdkVersion tag is 3.8.0.1290 in app's Info.plist so I'm using the latest air sdk.
I'm testing on ipod touch 5g running iOS7 beta 6.
This is the only code:
var sound : Sound = new Sound(new URLRequest("sound.mp3"));
sound.addEventListener(Event.COMPLETE, function(e:Event) : void {
     sound.play();
Am I missing something or does the bug still exists?