Hello same problem here, sme eeror messages.
It does create a core file when trying to encode: ced@princesse:~/jack/Various Artists/Classical 2009 (CD1) > gdb GNU gdb (GDB) 7.6.2 (Debian 7.6.2-1) Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html > This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. (gdb) core core [New LWP 16088] warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7fff677fe000 Core was generated by `flac -o track_20.flac track_20.wav'. Program terminated with signal 8, Arithmetic exception. #0 0x0000000000414650 in ?? () but running this command form command line, does not trigger any issue: ced@princesse:~/jack/Various Artists/Classical 2009 (CD1) > flac -o track_20.flac track_20.wav flac 1.3.0, Copyright (C) 2000-2009, 2011-2013 Josh Coalson & Xiph.Org Foundation flac comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to redistribute it under certain conditions. Type `flac' for details. track_20.wav: wrote 31774235 bytes, ratio=0,500 ced@princesse:~/jack/Various Artists/Classical 2009 (CD1) > sudo dpkg -l flac jack Souhait=inconnU/Installé/suppRimé/Purgé/H=à garder | État=Non/Installé/fichier-Config/dépaqUeté/échec-conFig/H=semi-installé/W=attend-traitement-déclenchements |/ Err?=(aucune)/besoin Réinstallation (État,Err: majuscule=mauvais) ||/ Nom Version Architecture Description +++-======================================-========================-========================-================================================================================= ii flac 1.3.0-2 amd64 Free Lossless Audio Codec - command line tools ii jack 3.1.1+cvs20050801-29 amd64 Rip and encode CDs with one command