Hooked hdmi dongle to projector. Used kindle fire hdx. Picture works fine but no sound from projector speakers. No sound from kindle speakers. Need to use kindle headphone jack for sound.

Follow this steps and fix it. God bless you
Check the system requirements on the Bluetooth dongle. If your system does not fit all the requirements, the device is not going to work. The requirements for the Bluetooth dongle are printed in the user manual and packaging. You may compare this to what is running on the computer by clicking "Start," "Control Panel" and "System." This displays the hardware running on the computer.

• 2

Disconnect the Bluetooth dongle, restart the computer, then plug it back into a USB port. If you power on the computer with the dongle already instead, the system may not detect the equipment. Restarting the computer and performing this action helps correct the problem.

• 3

Remove the Bluetooth dongle from the USB port and plug it into a different connection. Some USB ports fail to detect certain computer hardware. Changing the connection port fixes this.

• 4

Install the driver on the provided driver installation CD. Without the driver, the computer is unable to detect and use the dongle. Insert the driver installation CD into the disc drive of the computer, then follow the on-screen steps to install the driver onto the system.