audio thru USB device

audio thru USB device

make sure user is in "audio" group

uppercase L to list devices, then aplay to play to device

peter@smallfry:/mnt/Music/Music/iTunes/iTunes Music/Deacon Blue/Raintown $ 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=UA1A
    EDIROL UA-1A, USB Audio
    Default Audio Device
sysdefault:CARD=UA1A
    EDIROL UA-1A, USB Audio
    Default Audio Device
front:CARD=UA1A,DEV=0
    EDIROL UA-1A, USB Audio
    Front speakers
surround21:CARD=UA1A,DEV=0
    EDIROL UA-1A, USB Audio
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=UA1A,DEV=0
    EDIROL UA-1A, USB Audio
    4.0 Surround output to Front and Rear speakers
surround41:CARD=UA1A,DEV=0
    EDIROL UA-1A, USB Audio
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=UA1A,DEV=0
    EDIROL UA-1A, USB Audio
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=UA1A,DEV=0
    EDIROL UA-1A, USB Audio
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=UA1A,DEV=0
    EDIROL UA-1A, USB Audio
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=UA1A,DEV=0
    EDIROL UA-1A, USB Audio
    IEC958 (S/PDIF) Digital Audio Output
dmix:CARD=UA1A,DEV=0
    EDIROL UA-1A, USB Audio
    Direct sample mixing device
dsnoop:CARD=UA1A,DEV=0
    EDIROL UA-1A, USB Audio
    Direct sample snooping device
hw:CARD=UA1A,DEV=0
    EDIROL UA-1A, USB Audio
    Direct hardware device without any conversions
plughw:CARD=UA1A,DEV=0
    EDIROL UA-1A, USB Audio
    Hardware device with all software conversions
peter@smallfry:/mnt/Music/Music/iTunes/iTunes Music/Deacon Blue/Raintown $ aplay -D "hw:CARD=UA1A,DEV=0" "../../../iTunes Music/Soup Dragons/Unknown Album/I'm Free.wav"

Playing WAVE '../../../iTunes Music/Soup Dragons/Unknown Album/I'm Free.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo

ffmpeg to convert to PCM and pipe to aplay

ffmpeg -i 01\ Peter\ and\ the\ Wolf.m4a  -f wav pipe:1 | aplay -D "hw:CARD=UA1A,DEV=0" -


curl http://bbcmedia.ic.llnwd.net/stream/bbcmedia_6music_mf_q | ffmpeg -i - -f wav pipe:1 | aplay -D "hw:CARD=UA1A,DEV=0" -

or one pipe less

ffmpeg -i http://bbcmedia.ic.llnwd.net/stream/bbcmedia_6music_mf_p -f wav pipe:1 | aplay -D "hw:CARD=UA1A,DEV=0" -