If you're interested in the whole Berkeley MPEG-Tools package, just 
get bmt1r1-patched.tar.gz in this directory.  If you're looking for a specific
tool, go to the appropriate sub-directory.

Here's an explanation of the sub-directories :

bits - source and binaries for the Berkeley MPEG-1 Bitrate Tool
blocks - source and binaries for the Berkeley MPEG-1 Macroblock Analyzer
docs - documentation for all of the Berkeley MPEG tools
encode - source and binaries for the Berkeley Parallel MPEG-1 Encoder
movies - collection of mpeg movies for you to play
play - source and binaries for the Berkeley MPEG-1 Player (mpeg_play)
stat - source and binaries for the Berkeley MPEG-1 Analyzer
misc (convert) - miscellaneous mpeg tools, mostly to help in encoding
EncodeData - sample data for the encoder
Old  - our old distributions
genoa - MPEG demo from 1992 Comdex

And the files:
ANNOUNCE - What we posted to announce the new versions
INDEX - this is what you're reading
bmt-patch - the patches applied so far
floatdct.c - file missing in first bmt release of mpeg_play
bmt1r2.tar.gz - the distrubution source

Old code:
bmt1r1.tar.gz - the distrubution source
bmt1r1-patched.tar.gz - the distrubution source, revised