How to convert AAC to MP3 on Mac OS X

1. install VLC
3. create a file called convert.sh on your desktop ie. ~/Desktop/convert.sh
4. chmod +x convert.sh
5. make the contents of convert.sh

#!/bin/sh

vlc="/Applications/VLC.app/Contents/MacOS/VLC"
ext="mp3"
dst="/Users/[your name]/Desktop/"

for a in *$fmt; do
$vlc -I dummy -vvv "./$a" --sout "#transcode{acodec=mp3,ab=128,channels=2,samplerate=44100}:std{mux=raw,dst=\"$dst$a.$ext\",access=file}" vlc://quit
done

6. open terminal and cd to folder that has your AAC music files ie. ~/Desktop/AAC
7. then type ~/Desktop/convert.sh *.aac
8. sit back and relax as the files are converted

Notes
http://wiki.videolan.org/How_to_Batch_Encode
http://wiki.videolan.org/Documentation:Streaming_HowTo_New#Example_commandline:_Converting_an_audio_file_to_a_MP3_file