+If the temporary directory contains an executable file named
+"post-processor", B<fa-flacd> executes that file with the relative
+path to the output FLAC file as an argument. The output files are in
+their final location when "post-processor" starts. Possible uses are
+running B<flac2mp3>, moving the output files to a different location,
+removing the lock file, or adding to a database. The standard input,
+output, and error streams are inherited from B<fa-flacd>, so they may
+be connected to anything from a tty to /dev/null. This means that you
+may want to redirect these streams, if you want to save them or do any
+logging.
+