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I've bought a CONCEPTRONIC USB SOUND ADAPTER that I want to connect to my stereo. I plugged this USB adapter into the Raspberry Pi.

aplay -l showing the following output:

**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
Subdevices: 8/8
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
Subdevice #7: subdevice #7
card 1: Set [C-Media USB Headphone Set], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0

I don't know if the USB is recognized and correctly working but I think it isn't because there is no sound.

How can I install the driver/firmware so it plays my music?

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1 Answer 1

up vote 2 down vote accepted

I assume the Set [C-Media USB Headphone Set], device 0: USB Audio [USB Audio] is your USB sound card.

Test if the card is running by typing alsamixer, press F6 to select which sound card to use and press enter on the USB audio. Then try and play some music with mpg123 or similar.

To change the default device to your new one, edit /etc/asound.conf to look like:

pcm.!default {
    type hw
    card 1
    device 0
}
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Thanks for the help Munkeh it's now working fine !!! –  Peter Dec 8 '12 at 14:58
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