ls -1d /media/data/music/albums/* 2>/dev/null | while read dir
do
        if [ -d "${dir}" ]
        then
               cd "${dir}"
               ls -1d *.mp3 2>/dev/null | while read filename
               do
                           if [ -f "${filename}" ]
                           then
                                 mp3gain -a -k -p "${filename}"
                           fi
               done
        fi
done