Here are files and headers from FLAC sources.

From libFLAC (can be disabled with --enable-external-flac,
	if you have libFLAC & headers installed. Copyright
	is in COPYING.Xiph):
FLAC_assert.h
FLAC_export.h
FLAC_format.h
FLAC_metadata.h
FLAC_ordinals.h
FLAC_stream_decoder.h
bitbuffer.c
bitmath.c
cpu.c
crc.c
fixed.c
format.c
lpc.c
metadata_object.c
private_bitbuffer.h
private_bitmath.h
private_cpu.h
private_crc.h
private_fixed.h
private_format.h
private_lpc.h
protected_stream_decoder.h
stream_decoder.c

From plugin_common (needed for decoding.
	can only be disabled by --disable-flac :)
	(GPL):
defs.h
dither.c
dither.h
private_fast_float_math_hack.h
replaygain_synthesis.c
replaygain_synthesis.h

Changes made:
Fixed some warnings.
Use local headers.
Currently no assembler optimizations included, etc.

