Thank you for getting back to me.
I finally got it working by removing the DAC and fitting it again. Seems it was a connection issue between the Kali and Piano.
I am however having another issue with both my Pi players ( Justboom and the Kali+Piano 2.1) when running the squeezelite player with a remote squeezebox server. They both work fine when using a local squeezebox server on a connected usb drive, but if using a remote server, only the first few seconds of a track is played then the player goes silent. They will sometimes play a full album, then when you change album, it is back to the same behaviour of only playing a few seconds before going silent.
I have tried everything I can think of, I have turned off everything except squeezelite on the Pi’s, but still the same problem. I can however play fine from the remote squeezebox server by using iPeng on my iPad… so server / signal doesn’t seem to be the problem.
Do you have any thoughts on how to solve this?