Unable to deactivate Autoplay in Lister Viewer Pane

I just recently got .mp4 files to preview/play in Lister by installing WMP (Windows Media Player), but now all videos automatically play even though I have the "Automatically play movies" checkbox unchecked for the "Movie" plugin. I have restarted DOPUS, restarted my computer but no luck...is there another setting somewhere? Any suggestion?

WMP uses activex, not movie plugin.

That was it, I needed to deactivate "request to autoplay" in the Active X plugin. Thank you very much!