Audio through HDMI

To set the audio output to HDMI you need to to

amixer cset numid=3 2

2 Stands for HDMI, 1 would be analog, 0 would be auto, what ever this means.

Try it.

aplay /usr/share/sounds/alsa/Front_Center.wav

Now lets pump up the volume to 0 dB.

amixer cset numid=1 0

Try it again.

aplay /usr/share/sounds/alsa/Front_Center.wav

Done. Isn’t it?

Next step.