Batch convert .wav to mp3 and ogg?

I have a few hundred .wav files that I need to convert to both ogg and mp3 format. Is there a way that I can do this in batch either from Audacity or from some other command line tool?

From a Unix-like (Linux, OSX, etc) commandline, ffmpeg can be used like this:

for f in *.wav; do ffmpeg -i "$f" -c:a libmp3lame -q:a 2 "${f/%wav/mp3}" -c:a libvorbis -q:a 4 "${f/%wav/ogg}"; done

This will convert every WAV in a directory into one MP3 and one OGG; note that it's case-sensitive (the above command will convert every file ending in .wav, but not .WAV). If you want a case-insensitive version:

for f in *.{wav,WAV}; do ffmpeg -i "$f" -c:a libmp3lame -q:a 2 "${f%.*}.mp3" -c:a libvorbis -q:a 4 "${f%.*}.ogg"; done

To convert every WAV in a directory recursively (that is: every WAV in the current directory, and all directories in the current directory), you could use find:

find . -type f -name '*.wav' -exec bash -c 'ffmpeg -i "$0" -c:a libmp3lame -q:a 2 "${0/%wav/mp3}" -c:a libvorbis -q:a 4 "${f/%wav/ogg}' '{}' \;

(Max respect to Dennis for his response here for finding me a working implementation of find with ffmpeg)

For case-insensitive search with find, use -iname instead of -name.

A note on -q:a: for MP3, the quality range is 0-9, where 0 is best quality, and 2 is good enough for most people for converting CD audio; for OGG, it's 1-10, where 10 is the best and 5 is equivalent to CD quality for most people.

You could use foobar2000 with encoders for ogg and mp3. I believe you can find encoders at rarewares.

Looks like you can use oggenc to convert WAV into OGG, and you can use lame to convert WAV into MP3.

Download ffmpeg from below link and install it: http://ffmpeg.zeranoe.com/builds/

create and run batch file with below commands in it:

echo converting *.wav to *.ogg 
mkdir ..\Ogg
for /r %%i in (*) do ffmpeg -i %%i -acodec libvorbis ..\Ogg\%%~ni.ogg

All converted *.ogg files will be copied to ..\Ogg directory.