I have a 3D scene with audio encoded as ogg. The audio is sampled as 22.05KHz, 16bit PCM, mono. When the scene is rendered without turning on tracking ( call stopCamera ), it works ok. The audio is continuous and clear. When I turn on tracking ( call startCamera ), the audio starts broken and has noises. I notice that QCAR enables MediaPlayer. I would like to know how to disable the Mediaplayer in QCAR.