[George]

Under the TOOLS, OPTIONS tab above, select FILE TYPE, and uncheck WINDOWS MEDIA VIDEO FILE. That one is one of those I've unchecked in mine.

If that's not it, you may still find the culprit here. I'd go on and uncheck everything except WINDOWS AUDIO FILE, and if that solves the problem, you can start adding back until you find the culprit.

If that doesn't do it, then it may not be WMP.

George