Convert wma files to mp3 using ffmpeg & lame

wma2mp3.sh

#!/bin/bash
# wma2mp3.sh
# Ricardo Tun <me@ricardotun.net>
#
# Depends: lame, ffmpeg
# Use: ./wma2mp3.sh path_to_wma_files
# If directory is not specified, the current working directory will be used to find wma files.

wma2mp3() {
    if [ ! -e *.wma ]; then
        echo "`basename $0`: It looks like there's any wma file in this directory."
        sleep 2
    else
        i=0
        for j in *.wma
        do
            ffmpeg -i "$j" -vn -f wav - | lame -V2 - "`basename "$j" .wma`".mp3
            rm -f "$j"
            let i=i+1
        done
        clear
        echo "`basename $0`: $i wma files converted to mp3."
        sleep 2
    fi
}

if [ ! -n "$1" ]; then
    echo "`basename $0`: Not specifying directory. Using ./ to find wma files to convert..."
    sleep 2
    wma2mp3
else
    basedir=`pwd`
    echo "`basename $0`: Looking to wma files in $1 directory."
    sleep 2
    cd "$1"
    wma2mp3
    cd "$basedir"
fi

# EOF