I just got my PiSound and case, put them together and fired it up.
I have run the pisound-config script.
I have run apt-get update and apt-get upgrade multiple times.
aplay -l does not show it.
dmesg does not show anything on SPI.
I don’t know if there is a kernel module for this, but I haven’t found a *.ko file on my system. lsmod doesn’t show anything that I would correlate to PiSound.
I am running Raspbian on the RPi.