I don't know if the new versions make this convertion.
I always use the Winamp v.2.80, take it on:
http://www.megaupload.com/?d=E50QE1681 - Play the sound with Winamp.
2 - Choose Options
3 - Choose Preference
4 - Choose Plugins/Output
5 - Choose plugin:
Nullsoft Disk Write plug-in v2.0c (x86) [out_disk.dll]6 - Press Configure
7 - Choose format PCM attributes 22.050Hz; l6bit; stereo for music or choose format PCM attributes 22.050Hz; 8bit; mono for sounds.
8 - Close configuration.
9 - Play the sound again.
10 - Repeat the procedures 2, 3 and 4 and change the plugins to
Winamp2 waveout plug-in v1.03 [out_wave.dll]11 - Find the changed sound on default folder (In may PC is C:\) and listen the new sound.