Dima; are you saying that you can put a regular commercial CD in your CD tray, play it using Winamp, and hear the music? If so, this goes against everything I know about Winamp and CD's. Generally, Winamp simply "plays" the audio data through the audio cable, (that you say isn't there). Unless your using some unusual plug-in, I don't think Winamp itself, has any way to extract the audio data through the IDE cable.
But, I could be wrong . . .
Dex
Could you give a few more details as to your setup?