DFX is an audio enhancement plugin for various media players. Actually I must say it is quite impressive ;-) New Speaker/Headphone Mode: ultimate sound in any mode New Flexible Skinning System: supports different skin shapes and sizes Stylish New Design Full Windows XP Optimization 26 finely-tuned Presets for all your favorite music DFX is available for Winamp, MUSICMATCH, Sonique, RealOne, RealPlayer, RealJukebox, and J. River Media Jukebox. Grab your copy here.