How to use touch screen with volumio raspi

Hi thank for asking l got it to work with my touch screen seven inch and volumio
But could not get any sound from dac amplifier suptronic x400
This was on a raspberry pi 4 but have had no joy in getting the right settings for the sound to work.must be picking the wrong amplifier in the setting .

I had to login on pi 7inch screen volumio volumio and had it up on the PC.
as it easier to configure on the larger screen.
Good Luck