HIFIBERRY DAC+ Light problem

Hi all,

i have a raspberry pi3+ and installed a HIFIBERRY DAC+ Light, i have removed onboard drivers and when i run aplay -l i take

**** List of PLAYBACK Hardware Devices ****
card 0: sndrpihifiberry [snd_rpi_hifiberry_dac], device 0: HifiBerry DAC HiFi pcm5102a-hifi-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0


but when i'm trying to play something from liquidsoap i get this

Thread 9 killed on uncaught exception Alsa.Device_busy

does anybody know why?

I have installed many same sound cards at pi3 model b and works perfect but here i have this problem.

Any help?


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