IFS=$'\n'
if [ $# == 2 ]; then
    if [ ! -d $1 ]; then
	echo "Error: directory $1 does not exist"
    else
	dir=$1
	len=$((${#dir} + 1))
	if [ ! -d $2 ]; then
	    mkdir $2
	fi
	for i in `ls -R $1`
	do
	    src=`echo $i | cut -d : -f 1`
	    if [ -d $src ]; then
		dir=$src
	    fi
	    dest=$2/`echo $dir | cut -c $len-`
	    if [ ! -d $dest ]; then
		mkdir $dest
	    fi
	    if [ -f $dir/$i ]; then
		cp -v $dir/$i $dest
	    fi
	done
    fi
else
    echo "On some MP3 player, the play order depends on wich files are copied first.
Folder files will be copied alphabetically by filename, subfolders included.

Usage: $0 source_directory destination_directory"
fi