Able MP3 OGG to WAV converter is a Windows software for converting MP3 and Ogg Vorbis files to WAV format. (suitable for burning to CD)
Just drag your files, hit convert and you are done.
If you need to fill your CD optimally, you'll make use of sorting and total size display function.

Features:
converts both MP3 and OGG Vorbis files
supports drag&drop for adding files
displays total disk space needed so that you could fill your CD optimally
sorting by name or length to further assist in preparing your files for CD burning
nice interface
easy to use
it's free!

http://www.guitar.sk/mp3_ogg_converter.htm