Okay, enough with the shameless toadying :)
Where, o where does my WinXP 'puter stick downloaded codecs for unfamiliar media files? One of them got corrupted and now one of my favorite clips won't play (except for audio). The message says "error downloading codec". I imagine if I can eliminate the codec(s) and let the 'puter download them again it might be OK.
That or I've just lost the clip.