BULKMp3FileNameBeautify.sh

# Rename mp3 files to naming convention of no number and no special character and hence making your music library cool again to read
# run this file in using terminal in music directory by command ./Mp3FileNameBeautify.sh
# and you are welcome to contribute, customize or whatever.
# suggestions are welcomed
# by - HARSH BHATIA
for i in *.mp3;
    do
        src=$i
        # remove mp3 from name
        tgt=$(echo $i | sed -E 's/(.mp3)//g')
        # remove names of websites 
        tgt=$(echo $tgt | sed -E 's/www.Songs.PK//g')
        tgt=$(echo $tgt | sed -E 's/wwwSongspk//g')
        tgt=$(echo $tgt | sed -E 's/www.TumTube.com//g')
        tgt=$(echo $tgt | sed -E 's/MusikMaza.Com//g')
        tgt=$(echo $tgt | sed -E 's/www.SpreadMp3.com//g')
        tgt=$(echo $tgt | sed -E 's/www.Songs.PK.com//g')
        tgt=$(echo $tgt | sed -E 's/www.Songs.cc//g')
        tgt=$(echo $tgt | sed -E 's/www.Songs.CC//g')
        tgt=$(echo $tgt | sed -E 's/www.Songspk.name//g')
        tgt=$(echo $tgt | sed -E 's/OFFICIAL VIDEO//g')
        tgt=$(echo $tgt | sed -E 's/VIDEO//g')
        tgt=$(echo $tgt | sed -E 's/video//g')
        tgt=$(echo $tgt | sed -E 's/Video//g')
        tgt=$(echo $tgt | sed -E 's/Official//g')
        tgt=$(echo $tgt | sed -E 's/Music//g')
        tgt=$(echo $tgt | sed -E 's/music//g')
        tgt=$(echo $tgt | sed -E 's/www.keepvid.com//g')
        tgt=$(echo $tgt | sed -E 's/lyrics//g')
        tgt=$(echo $tgt | sed -E 's/Lyrics//g')
        tgt=$(echo $tgt | sed -E 's/www.Youtube.com//g')
        tgt=$(echo $tgt | sed -E 's/Youtube//g')
        tgt=$(echo $tgt | sed -E 's/www.DJMaza.info//g')
        tgt=$(echo $tgt | sed -E 's/www.DJMaza.com//g')
        tgt=$(echo $tgt | sed -E 's/www.MusikMaza.com//g')
        tgt=$(echo $tgt | sed -E 's/www.Tube2u.com//g')
        tgt=$(echo $tgt | sed -E 's/www.123musiq.com//g')
        tgt=$(echo $tgt | sed -E 's/www.Fmw11.com//g')
        tgt=$(echo $tgt | sed -E 's/DownloadMing.SE//g')
        tgt=$(echo $tgt | sed -E 's/www.TumTube.com//g')
        tgt=$(echo $tgt | sed -E 's/www.MusikMaza.com//g')
        tgt=$(echo $tgt | sed -E 's/www.SpreadMp3.com//g')
        tgt=$(echo $tgt | sed -E 's/www.Songspk.CC//g')
        tgt=$(echo $tgt | sed -E 's/www.Songspk.name//g')
        tgt=$(echo $tgt | sed -E 's/www.FunMaza.com//g')
        # convert to lowercase
        tgt=$(echo $tgt | tr 'A-Z' 'a-z')
        # replace all numbers
        tgt=$(echo $tgt | sed -E 's/[0-9]*//g')
        # remove special character
        tgt=$(echo $tgt | sed -E 's/[][\\^()*!@+.$-]//g')
        # trim all whitespaces
        tgt=$(echo $tgt | sed -E 's/^[ \t]*//;s/[ \t]*$//g')
        # append mp3 later
        tgt=$(echo $tgt | sed "s/$/.mp3/")
        mv "$src" "$tgt"
    done

Accidentally overwriting ABC001.mp3, ABC002.mp3 kind of files with abc.mp3 can be prevented by renaming those files like abc.mp3, abc1.mp3. Not an optimal solution but will prevent data loss. Can be achieved by replacing 56'th line with following (tested in ubuntu):

#check if there is a need to rename
if [ "$src" != "$tgt" ]; then
    #check if file with new name does not exist already
    if [ ! -f $tgt ];then
        mv "$src" "$tgt"
    else
        #append simple numbers to uniqly identify the files (to save from the risk of overrighting)
        i=1
        tgt=$(echo $tgt | sed -E 's/(.mp3)//g')
        newtgt="${tgt}${i}.mp3"

        #check until the filename is not unique
        while [ -f $newtgt ];
        do
            i=$((i+1))
            newtgt="${tgt}${i}.mp3"
        done

        mv "$src" "$newtgt"
     fi
fi