#!/bin/sh

if [ $# -lt 1 ]; then
  echo "Usage: $0 <prefix>"
  echo "Example: $0 A1"
  echo 'A1.list would be converted to A1.mp3'
  echo
  exit 1
fi

FILE=$1

if [ ! -e $FILE.list ]; then
  echo "$FILE.list does not exist"
  exit 2
fi

PIECES="$(LANG=C split --verbose -l 500 $FILE.list 2>&1 | cut -d\' -f2)"
WAVLIST=
for PIECE in $PIECES; do
   sox `cat $PIECE` $PIECE.wav
   rm $PIECE
  WAVLIST="$WAVLIST $PIECE.wav"
done

#sox $WAVLIST $FILE.wav
#ffmpeg -i $FILE.wav $FILE.mp3
#rm $FILE.wav $WAVLIST

sox $WAVLIST $FILE.mp3
rm $WAVLIST