Step 4

USB Audio Configuration

Plug in your USB Audio Card, and list your usb devices

lsusb

Now run the sound modules probe

cat /proc/asound/modules

You will see something like

 0 snd_bcm2835
 1 snd_usb_audio

The snd_bcm2835 is the default, we wan't to force the USB output so, we will edit the conf file

sudo nano /etc/modprobe.d/alsa-base.conf

Add these lines

options snd_usb_audio index=0
options snd_bcm2835 index=1
options snd slots=snd-usb-audio,snd-bcm2835

Reboot, and return to terminal (F4) once EmulationStation has restarted

List out the module probe

cat /proc/asound/modules

You will see something like

 0 snd_usb_audio
 1 snd_bcm2835

Success, enjoy the sound

Overview