Thanks the web ! Below the informations :
volumio@volumio:~$ aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
default:CARD=ALSA
bcm2835 ALSA, bcm2835 ALSA
Default Audio Device
sysdefault:CARD=ALSA
bcm2835 ALSA, bcm2835 ALSA
Default Audio Device
dmix:CARD=ALSA,DEV=0
bcm2835 ALSA, bcm2835 ALSA
Direct sample mixing device
dmix:CARD=ALSA,DEV=1
bcm2835 ALSA, bcm2835 IEC958/HDMI
Direct sample mixing device
dsnoop:CARD=ALSA,DEV=0
bcm2835 ALSA, bcm2835 ALSA
Direct sample snooping device
dsnoop:CARD=ALSA,DEV=1
bcm2835 ALSA, bcm2835 IEC958/HDMI
Direct sample snooping device
hw:CARD=ALSA,DEV=0
bcm2835 ALSA, bcm2835 ALSA
Direct hardware device without any conversions
hw:CARD=ALSA,DEV=1
bcm2835 ALSA, bcm2835 IEC958/HDMI
Direct hardware device without any conversions
plughw:CARD=ALSA,DEV=0
bcm2835 ALSA, bcm2835 ALSA
Hardware device with all software conversions
plughw:CARD=ALSA,DEV=1
bcm2835 ALSA, bcm2835 IEC958/HDMI
Hardware device with all software conversions
default:CARD=sndrpihifiberry
snd_rpi_hifiberry_dacplus,
Default Audio Device
sysdefault:CARD=sndrpihifiberry
snd_rpi_hifiberry_dacplus,
Default Audio Device
dmix:CARD=sndrpihifiberry,DEV=0
snd_rpi_hifiberry_dacplus,
Direct sample mixing device
dsnoop:CARD=sndrpihifiberry,DEV=0
snd_rpi_hifiberry_dacplus,
Direct sample snooping device
hw:CARD=sndrpihifiberry,DEV=0
snd_rpi_hifiberry_dacplus,
Direct hardware device without any conversions
plughw:CARD=sndrpihifiberry,DEV=0
snd_rpi_hifiberry_dacplus,
Hardware device with all software conversions
volumio@volumio:~$ volumio@volumio:~$ aplay -L
-bash: volumio@volumio:~$: command not found
null
Discard all samples (playback) or generate zero samples (capture)
default:CARD=ALSA
bcm2835 ALSA, bcm2835 ALSA
Default Audio Device
sysdefault:CARD=ALSA
bcm2835 ALSA, bcm2835 ALSA
Default Audio Device
dmix:CARD=ALSA,DEV=0
bcm2835 ALSA, bcm2835 ALSA
Direct sample mixing device
dmix:CARD=ALSA,DEV=1
bcm2835 ALSA, bcm2835 IEC958/HDMI
Direct sample mixing device
dsnoop:CARD=ALSA,DEV=0
bcm2835 ALSA, bcm2835 ALSA
Direct sample snooping device
dsnoop:CARD=ALSA,DEV=1
bcm2835 ALSA, bcm2835 IEC958/HDMI
Direct sample snooping device
hw:CARD=ALSA,DEV=0
bcm2835 ALSA, bcm2835 ALSA
Direct hardware device without any conversions
hw:CARD=ALSA,DEV=1
bcm2835 ALSA, bcm2835 IEC958/HDMI
Direct hardware device without any conversions
plughw:CARD=ALSA,DEV=0
bcm2835 ALSA, bcm2835 ALSA
Hardware device with all software conversions
plughw:CARD=ALSA,DEV=1
bcm2835 ALSA, bcm2835 IEC958/HDMI
Hardware device with all software conversions
default:CARD=sndrpihifiberry
snd_rpi_hifiberry_dacplus,
Default Audio Device
sysdefault:CARD=sndrpihifiberry
snd_rpi_hifiberry_dacplus,
Default Audio Device
dmix:CARD=sndrpihifiberry,DEV=0
volumio@volumio:~$ null
-bash: null: command not found
volumio@volumio:~$ Discard all samples (playback) or generate zero samples (capture)
-bash: syntax error near unexpected token `('
volumio@volumio:~$ default:CARD=ALSA
-bash: default:CARD=ALSA: command not found
volumio@volumio:~$ bcm2835 ALSA, bcm2835 ALSA
-bash: bcm2835: command not found
volumio@volumio:~$ Default Audio Device
-bash: Default: command not found
volumio@volumio:~$ sysdefault:CARD=ALSA
-bash: sysdefault:CARD=ALSA: command not found
volumio@volumio:~$ bcm2835 ALSA, bcm2835 ALSA
-bash: bcm2835: command not found
volumio@volumio:~$ Default Audio Device
-bash: Default: command not found
volumio@volumio:~$ dmix:CARD=ALSA,DEV=0
-bash: dmix:CARD=ALSA,DEV=0: command not found
volumio@volumio:~$ bcm2835 ALSA, bcm2835 ALSA
-bash: bcm2835: command not found
volumio@volumio:~$ Direct sample mixing device
-bash: Direct: command not found
volumio@volumio:~$ dmix:CARD=ALSA,DEV=1
-bash: dmix:CARD=ALSA,DEV=1: command not found
volumio@volumio:~$ bcm2835 ALSA, bcm2835 IEC958/HDMI-bash: bcm2835: command not found
volumio@volumio:~$ Direct sample mixing device
-bash: Direct: command not found
volumio@volumio:~$ dsnoop:CARD=ALSA,DEV=0
-bash: dsnoop:CARD=ALSA,DEV=0: command not found
volumio@volumio:~$ bcm2835 ALSA, bcm2835 ALSA
-bash: bcm2835: command not found
volumio@volumio:~$ Direct sample snooping device
-bash: Direct: command not found
volumio@volumio:~$ dsnoop:CARD=ALSA,DEV=1
-bash: dsnoop:CARD=ALSA,DEV=1: command not found
volumio@volumio:~$ bcm2835 ALSA, bcm2835 IEC958/HDMI-bash: bcm2835: command not found
volumio@volumio:~$ Direct sample snooping device
-bash: Direct: command not found
volumio@volumio:~$ hw:CARD=ALSA,DEV=0
-bash: hw:CARD=ALSA,DEV=0: command not found
volumio@volumio:~$ bcm2835 ALSA, bcm2835 ALSA
-bash: bcm2835: command not found
volumio@volumio:~$ Direct hardware device without any conversions
-bash: Direct: command not found
volumio@volumio:~$ hw:CARD=ALSA,DEV=1
-bash: hw:CARD=ALSA,DEV=1: command not found
volumio@volumio:~$ bcm2835 ALSA, bcm2835 IEC958/HDMI-bash: bcm2835: command not found
volumio@volumio:~$ Direct hardware device without any conversions
-bash: Direct: command not found
volumio@volumio:~$ plughw:CARD=ALSA,DEV=0
-bash: plughw:CARD=ALSA,DEV=0: command not found
volumio@volumio:~$ bcm2835 ALSA, bcm2835 ALSA
-bash: bcm2835: command not found
volumio@volumio:~$ Hardware device with all software conversions
-bash: Hardware: command not found
volumio@volumio:~$ plughw:CARD=ALSA,DEV=1
-bash: plughw:CARD=ALSA,DEV=1: command not found
volumio@volumio:~$ bcm2835 ALSA, bcm2835 IEC958/HDMI-bash: bcm2835: command not found
volumio@volumio:~$ Hardware device with all software conversions
-bash: Hardware: command not found
volumio@volumio:~$ default:CARD=sndrpihifiberry
-bash: default:CARD=sndrpihifiberry: command not found
volumio@volumio:~$ snd_rpi_hifiberry_dacplus,
-bash: snd_rpi_hifiberry_dacplus,: command not found
volumio@volumio:~$ Default Audio Device
-bash: Default: command not found
volumio@volumio:~$ sysdefault:CARD=sndrpihifiberry
-bash: sysdefault:CARD=sndrpihifiberry: command not found
volumio@volumio:~$ snd_rpi_hifiberry_dacplus,
-bash: snd_rpi_hifiberry_dacplus,: command not found
volumio@volumio:~$ Default Audio Device
-bash: Default: command not found
volumio@volumio:~$ dmix:CARD=sndrpihifiberry,DEV=0
-bash: dmix:CARD=sndrpihifiberry,DEV=0: command not found
volumio@volumio:~$
volumio@volumio:~$ cat /data/plugins/music_service/volsp otconnect2/startconnect.sh
#this file is generated by the plugin. You should not ed it it unless you know what you do. It will be overwrite by the plugin each time a change in config is detected
cd /data/plugins/music_service/volspotconnect2
./librespot -b 320 -c /tmp --enable-volume-normalisat ion --name 'Volumio' --backend alsa --device plughw:1 -- disable-audio-cache --initial-volume 100
volumio@volumio:~$