There's no audio output, at least when using headphones or any device that's attached to the headphone jack.  I don't know if this device is supposed to have speakers or not, but if it does, THOSE don't work either.  In addition, I can't get the device to couple to my (wireless) headphones via bluetooth.  That being said, I AM able to get sound if I attach an audio adapter to one of the USB ports.  Other than lack of audio output, the device seems OK.