Well you can find several software to mp3 to wave eThere is one that is called acoustica mp3 to wave & for the serial you can find it on the net very easy. Sincerely yours: RFM
For this purpose (and for encoding if I don't encode directly from CD) lamedropXPd is my favourite program. http://homepage.ntlworld.com/jfe1205/lamedropXPd-3.90.2.zip