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 
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.