This file is indexed.

/usr/share/alsa/cards/AU8810.conf is in libasound2 1.0.25-4.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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#
# Configuration for the AU8810 chip
#

<confdir:pcm/front.conf>

AU8810.pcm.front.0 {
	@args [ CARD ]
	@args.CARD {
		type string
	}
	type hw
	card $CARD
}	

<confdir:pcm/iec958.conf>

AU8810.pcm.iec958.0 {
	@args [ CARD AES0 AES1 AES2 AES3 ]
	@args.CARD {
		type string
	}
	@args.AES0 {
		type integer
	}
	@args.AES1 {
		type integer
	}
	@args.AES2 {
		type integer
	}
	@args.AES3 {
		type integer
	}
	type hw
	card $CARD
	device 1
}