Hi montemag:
Winamp3 is the latest version of Winamp. In checking their forums for information on converting from .wma to .wav using this version, the mods state it is <a href="http://forums.winamp.com/showthread.php?threadid=120003&highlight=.wma+to+.wav">not possible with Winamp3</a> but they recommend <a href="http://www.dbpoweramp.com/dmc.htm">dbpoweramp.</a>
See if you have any luck with that site. In the meantime, if you hit <a href="http://www.google.com">Google</a> and type in "converting .wma to .wav", the search page returns a ton of utilities that you can download/use.
Hope this helps! Good luck.
