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 ...
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, ...