My audio drags when I try to play mp3 and when I play a movie, I hear the background music but not the character's voices. I tried factory reset but no luck. I have a Allwinner A13 ARM Cortex A8 Android 4.0 Capactive Tablet 1 GHz (Ice Cream). I went to an porn site and to play the video, I selected low quality. After selecting the low quality, I was never able to play mp3 or movies correct again. Strange thing is sound play great with preload games.