Lanny, as one before me said, try it with VLC ... it plays almost anything out there. You are missing a codec that can decode the picture or audio that the file you downloaded needs. Go ahead and download 3ivx (3ivx.com i believe) and give it a try. It is a Divx/Xvid equivalent and runs very fast and smooth. It is free of course too :) It is not an application, but a codec and will be installed, so that other apps (like quicktime) can use it. Later, if you don't like it or it is not working, you can just trash it as easily if you want to - i found out though, that this is one piece of software i do not want to miss! Hope it works, William On Sep 24, 2006, at 5:28 AM, * L a n n y C o t l e r wrote: > I download an QT .avi file. But when I go to play it, I get an > alert saying "Some necessary QT software is missing. It may be > available on the QT web site. ...Click the Continue Button to check > for this software. > > What software am I missing? The Alert doesn't say. When I go to the > Apple QT plug-in URL, I get a long list of software to download. > How do I know which I am missing? > > This is the URL I am sent to: > > http://www.apple.com/quicktime/resources/components.html > > Any suggestions? > > TIA, > > Lanny > _______________________________________________ > MacDV mailing list > MacDV at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/macdv > > Listmom is trying to clean out his closets! Vintage Mac and random > stuff: > http://search.ebay.com/_W0QQsassZmacguy1984 >