Dshow player doesn't have a viz but you can go to it cause MP to act weird.

h4. Additional Information
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If you use directshow and then press x key to toggle to full-screen visualization, then what happens is it stays on the current screen and acts like it is in visualization (ffw, rew etc. work and so do the overlays). You have to press x again to get out of that mode... a bit confusing. Maybe have some sort of indication on-screen which mode it is in or a full-screen picture of the album art and id3 tag info would be good instead of a visualization.