From Sweltering Lemur, 3 Months ago, written in Plain Text.
  1. read -p 'Directory:' DIR;
  2. for mp3 in *.mp3 ;
  3.         do mpginfo "$mp3" 2>/dev/null | grep -Eqa '^[[:space:]]+.*Mono' && echo "$mp3";
  4. done
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