Thanks for your response!
After reading a lot and editing the config files (/etc/modprobe.d/alsa-base.conf, /usr/share/alsa/alsa.conf, /etc/asound.conf), I got it working with the c-media usb sound card.
The only issue is that for some reason, I have to sudo the alsa commands for them to work.
I log in as user “stp” and here’s what it looks like:
_ stp@~ _ uname -a
Linux RoCoCo_0 4.14.108-ti-r104 #1 SMP PREEMPT Tue Apr 9 18:16:29 UTC 2019 armv7l GNU/Linux
_ stp@~ _ aplay -l
aplay: device_list:270: no soundcards found…
_ stp@~ _ sudo aplay -l
**** List of PLAYBACK Hardware Devices ****
card 1: Device [USB Sound Device], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
I added stp to the audio group in /etc/group.
I can’t figure out why this is necessary, but I can work with it…
stp