I recently downloaded the trial version of this plug-in. Seems to make the sound a bit 'richer'; ie, more bass, etc. But, I'm thinking I could accomplish the same thing using the built in media player equalizer. One thing that does intrigue me is the headphone enhancement since most of my music listening via media player is done with my headphones. However, that feature is only active in the pay (29.95) version of the DFX plugin. Has anyone used it? What does it do? Is it worth the $29.95?