/usr/share/epiphany/sfx/Makefile.am is in epiphany-data 0.7.0-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | pkgdatadir = $(datadir)/@PACKAGE@/sfx
EXTRA_DIST = boulder_fall.wav gameover.wav monster_move.wav wood_smash.wav \
door_pass.wav gem_fall.wav player_move.wav \
emerald_eat.wav grass_eat.wav sapphire_eat.wav \
explosion.wav key_eat.wav timealarm.wav \
epiphany_credits.ogg epiphany_game.ogg\
epiphany_menu.ogg epiphany_ready.ogg
pkgdata_DATA = $(EXTRA_DIST)
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