Hello ,
Existing Dietpi version cheapo optical selection Not working ,we are in communication with DietPI team for support
Cheapo 3.5 mm audio jack only working on this selection.
You can refer following ,so that SPDIF will be work for you
For Cheapo SPDIF(Optical) working /etc/asound.conf has to edit and reboot.
pcm.!default {
type hw
card 0
device 2
}
ctl.!default {
type hw
card 0
}
Hope this helps .
Regards,
Admin