"aplay -l" is a command provided by the alsa extension so, if the alsa extension is not loaded, the aplay command will not be available.
As said before, reboot and then open a terminal window and enter the following: tce-load -i alsa-config
tce-load -i alsa
aplay -l
speaker-test -c2 -t wav -l1
Also, there is no need to use screenshots, you can copy and paste the text into your browser. In linux to copy and paste, highlight the text you want to copy and then paste it with the middle mouse button (or by simultaneously pressing the left and right mouse buttons if you don't have a middle button).