Consider the following activity: 1. Use Videos app on iPad to access an iTunes Library on a local computer via Home Sharing. 2. Start playback. 3. Airplay to Apple TV 3. Assume that the video has both AAC 2 ch and AC3 5.1 audio tracks. Also assume that ATV also has home sharing access on the same computer. Once playback begins: 1. Will the ATV output the AC3 audio track? 2. Will the video/audio stream actually go from computer->iPad->ATV or will it circumvent the iPad and stream directly from computer->ATV? Thanks!