StageVideo on iOS Produces No Sound

I'm building an AIR for Mobile VOD application. This is the third time I've done this now and it's gone fairly smooth, until I got to testing out of the AIR emulator.

I am testing on an iPad 3/4 (unsure which, but it has a retina display) and iOS 6.x. I can playback the video just fine, but I get no sound. When using the iOS Simulator, I get the opposite on both iOS 6 and 7 (sound without video).

I'm using StageVideo and everything works fine in the simulator and on Android. The video also plays back just fine in Safari. StageWebView is not an option because the app requires custom player controls (I had originally planned on using it until I got revised designs from my designer).

Here is the load function:

public function load( url:String ):void {
          trace( url );
          this._url = url;
          if ( this.isSupported ) {
                    this.stop();
                    this.sv = stage.stageVideos[0];
  
                    if ( !this.ns ) {
                              nc = new NetConnection(); 
                              nc.connect(null); 
                              ns = new NetStream(nc); 
                              ns.addEventListener(NetStatusEvent.NET_STATUS, netStatusHandler); 
                              ns.client= this;
                    }
  
                    ns.play(url);
                    this.sv.attachNetStream( ns );
                    this.resizeHandler( null );
          }
}

Again, everything works perfectly in Android, desktop, and iOS Safari. Just not in-app on iOS. I've tried both GPU and Direct rendering modes and they made no difference. Is this a bug in AIR 3.8? Should I downgrade?

Build specs:

• AIR 3.8.0.1280
• Flex 4.10
• iOS 6
• OS X 10.8
• Flash Builder 4.7
• Tested 5 different videos, all encoded using h.264 and AAC
• Streamed from both a remote server and a server set up on my machine, accessed using the local network. Also tried saving it to device (part of the app's functionality) and still had the same issue with local playback