As best I know, a SoundFont is basically a set of digitized instrument sounds that can be used for wave table synthesis - i.e., the soundcard uses and manipulates the digitized sounds to create music, ...
The SoundFont support in Winamp only works for SB Live, Audigy, and any other SF2 supporting card. And in fact its quite buggy. Even with a supported card the SF2 file will only be loaded half the ...