This howto explains how to do batch conversion of wma files into mp3 in linux.

• You need to have bash, mplayer and lame installed

sudo apt-get install bash mplayer lame

• Place all your wma files in the same folder (e.g. WMADIR)
• Copy-paste the script below in to a file (e.g. wma2mp3)

#!/bin/bash
 
#remove spaces
for i in *.wma; do mv "$i" `echo $i | tr ' ' '_'`; done
 
#remove uppercase
for i in *.[Ww][Mm][Aa]; do mv "$i" `echo $i | tr '[A-Z]' '[a-z]'`; done
 
#Rip with Mplayer / encode with LAME
for i in *.wma ; do mplayer -vo null -vc dummy -af resample=44100 -ao pcm:waveheader $i && lame -m s audiodump.wav -o $i; done
 
#convert file names
for i in *.wma; do mv "$i" "`basename "$i" .wma`.mp3"; done
 
rm audiodump.wav

• Place wma2mp3 in WMADIR and make it executable

cp wma2mp3 WMADIR
cd WMADIR
chmod +x wma2mp3

• Run wma2mp3 to convert wma files into mp3 files. While in WMADIR, type

./wma2mp3

Labels: howto