Convert m4b audiobook into mp3

Convert m4b audiobook into mp3.sh

#!/bin/bash

# Loop through all .m4b files in the current directory
for file in *.m4b; do
	# Get the filename without extension
	filename=$(basename -- "$file")
	filename="${filename%.*}"

	# Run ffmpeg command to convert .m4b to .mp3
	ffmpeg -i "$file" -acodec libmp3lame -ar 22050 "${filename}.mp3"
done