Kodi 17.Probems with Hifi Berry Dac: no sounds!

Hi!
I have successfully connected my RPI+HifiBerryDAC with Kodi,to my old hifi stereo system,
but …there is no sound,no music!
To configure (in My OSMC / hardware support .. and setting / system / audio output …)
I followed this link:
https://www.hifiberry.com/build/guides/e…-in-osmc/6
The guide of HIFIBerry is easy.I believe i have followed good…
So it’s a configuration issue of kodi. (I tried two versions of Kodi on two different SD and does not play!)
I tried sd with VOLUMIO and everithing is ok…!! Ok sound,ok music.
The problem is the config mode of kodi.I hope.
H E L P
many many thanks
PS excuse my bad English but I write from Italy