Hi foxint,
your DAC () is not recognized by Rune.
[ 5.889440] snd-hifiberry-digi soc:sound: ASoC: CODEC DAI wm8804-spdif not registered
[ 5.889454] snd-hifiberry-digi soc:sound: snd_soc_register_card() failed: -517
[ 5.912941] wm8804 1-003b: Failed to read device ID: -5
[ 5.912996] wm8804: probe of 1-003b failed with error -5
[ 6.052643] snd-hifiberry-digi soc:sound: ASoC: CODEC DAI wm8804-spdif not registered
[ 6.052659] snd-hifiberry-digi soc:sound: snd_soc_register_card() failed: -517
[ 6.056354] usbcore: registered new interface driver brcmfmac
[ 6.056413] snd-hifiberry-digi soc:sound: ASoC: CODEC DAI wm8804-spdif not registered
[ 6.056421] snd-hifiberry-digi soc:sound: snd_soc_register_card() failed: -517
Please double check the version.
Is it a Pi2Media 502DAC PRO or the normal one without PRO?
You can try to disable bluetooth.
dtoverlay=pi3-disable-bt-overlay
Put your sd card back into your Windows PC.
Navigate to /boot/config.txt and edit this file with a text editor.
Remove the "#" in front of "#dtoverlay=pi3-disable-bt-overlay".
Save the file and put it back into your Pi.
Frank