Found on:
http://www.rarewares.org/rrw/lpac.php

Files from:
http://www.rarewares.org/rrw/files/lossless/in_lpac.exe
http://www.rarewares.org/rrw/files/lossless/lpac_s.tar.gz
http://www.rarewares.org/rrw/files/lossless/lpacfull.zip
http://www.rarewares.org/rrw/files/lossless/ltac.zip
http://www.rarewares.org/rrw/files/lossless/ltac98.zip