Hi, I received my TP yesterday. So far I am impressed and haven't had any problems with the device, except for the fact that the audio plays through both the TP speakers and the headphones at the same time.
I have not noticed this problem but this might solve it. With the headphones not plugged in, use the volume button to turn it completely down. Plug in the headphones and adjust the volume to how you want it. The touchpad remembers the current volume settings for headphones and speakers separately.