Raspberry Pi 3: simultaneous audio output via HDMI and analogue jack

readme.txt

Secenario: running Kodi and MPD. Kodi should output sound via HDMI,
MPD should use the 3.5mm jack.

aplay -l lists available devices:

**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
  Subdevices: 7/8
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
  Subdevice #4: subdevice #4
  Subdevice #5: subdevice #5
  Subdevice #6: subdevice #6
  Subdevice #7: subdevice #7
card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 ALSA [bcm2835 IEC958/HDMI]
  Subdevices: 1/1
  Subdevice #0: subdevice #0


Configure Kodi to use "PI: HDMI" as audio output.
Configure MPD to use the analogue output (add this to mpd.conf):

audio_output {
        type            "alsa"
        name            "Raspberry Pi analogue output"
        device          "hw:0,0"
}

Make sure to set the 'PCM Playback route' control to 1 (analogue output):

amixer cset numid=3 1

The default of 0 (auto did not work). You can also add this to /boot/config.txt:

hdmi_drive=1

This is exactly what I need! After searched tons of articles this one saved me! Thank you very much!