The aimp_sacd is a plugin that produces an ability to decode hi-res audio in the DSDIFF / DSF formats via AIMP3.60 or newer.
The plugin was based on source code of the SACD Decoder plugin that licensed under LGPLv2.

The libsacd is compilled version of two libraries - libdsd2pcm and libdstdec.
Copyright (c) 2011-2013 Maxim V.Anisiutkin <maxim.anisiutkin@gmail.com>
Home page: http://sourceforge.net/projects/sacddecoder/