haven't seen it mentioned yet that version FLAC v1.20 was released on 7/23/07. i haven't upgraded yet but will be doing so momentarily.
FLAC 1.2.0
* General:
o Small encoding speedups for all modes.
* FLAC format:
o One of the reserved bits in the FLAC frame header has been assigned for future use; make sure to refer to the porting guide if you parse FLAC streams manually.
* Ogg FLAC format:
o (none)
* flac:
o Added runtime detection of SSE OS support for most operating systems.
o Added a new undocumented option --ignore-chunk-sizes for ignoring the size of the 'data' chunk (WAVE) or 'SSND' chunk (AIFF). Can be used to encode files with bogus data sizes (e.g. with WAV files piped from foobar2000 to flac.exe as an external encoder). Use with caution: all subsequent data is treated as audio, so the data/SSND chunk must be the last or the following data/tags will be treated as audio and encoded.
* metaflac:
o (none)
* plugins:
o (none)
* build system:
o Added solution and project files for building with VC++ 2005.
* libraries:
o Added runtime detection of SSE OS support for most operating systems.
o Fixed bug where invalid seek tables could cause some seeks to fail.
* Interface changes (see also the porting guide for specific instructions on porting to FLAC 1.2.0):
o libFLAC:
+ Added FLAC__format_sample_rate_is_subset()
o libFLAC++:
+ Added FLAC::Decoder::Stream::get_decode_position()