>> I'd like to convert some MP3 files to WAV format.
>> 2. Is there a freeware program that does that?
Lame Front-End (batch encoding, CBR option, presets)
Input: MP3, WAV
Output: MP3, WAV
OS: Win NT/98/ME/2000/XP/2003/Vista
http://www.pazera-software.com/products/lame-front-end/
RazorLame (batch encoding, CBR option)
Input: MP3, WAV
Output: MP3, WAV
OS: Win NT/95/98/2000/XP
http://www.dors.de/razorlame/index.php
winLAME (batch encoding, CBR option, presets)
Input: AAC, AC3, AIFF, AU, FLAC, MP3, OGG, VOC, WAV, WMA
Output: AAC, AC3, AIFF, AU, FLAC, MP3, OGG, VOC, WAV, WMA
OS: Win 2000/XP/2003/Vista/7
http://winlame.sourceforge.net/download.php