If you want to create a sound just go to this website, type your message and press the Create button. The download will start automatically.
If you prefer to use a sound pack already made, download this second link.
Amber Sound Pack
For upload the sounds to your transmitter, connect the Taranis USB port to your computer. Then press simultaneously the left trim to the right side and the right trim to the left and the switch on your Taranis. Copy your sounds to the “SOUNDS” directory.