Shell script to increases the speed of given mp3 files.

speedupmp3.sh

#!/bin/sh
#
# Increases the speed of given mp3 files.
# 
# Published by Konrad Förstner CC0 (Creative Commons Zero)
# No Rights Reserved
# http://creativecommons.org/publicdomain/zero/1.0/
#
# To the extent possible under law, Konrad Förstner has waived all
# copyright and related or neighboring rights to this work. This
# work is published from Germany.
for FILE in $@
do
    FILEBASE=$(basename $FILE .mp3)
    WAVFILE=${FILEBASE}.wav
    SPEEDUPWAVE=${FILEBASE}_speedup.wav
    SPEEDUPMP3=${FILEBASE}_speedup.mp3
    mpg321 -w $WAVFILE $FILE
    sox $WAVFILE $SPEEDUPWAVE tempo 1.5
    rm $WAVFILE
    lame $SPEEDUPWAVE $SPEEDUPMP3
    rm $SPEEDUPWAVE
done

First Gist I come across on GitHub and it's awesome. Thanks for the great introduction

I am happy that you like it!