This display of ignorance was inspired by joemike's statement that F4M adds codecs to QT... I've deleted QT from /Apps, but I've got F4M installed.

Have I got anything useful (other than VLC)?

If you're talking about the basic F4M version (free), I don't think so. Theoretically, the F4M plugin could be used by programs other than QT, but I don't know of any that do. You could compare the F4M extensions in Safari's Installed Plug-ins window (Help menu) with VLC's codec list to get an idea of the differences (mostly playlists etc.). Should you ever run into a Windows media issue where VLC is non-responsive, you could give the QT-F4M combo a shot.

If you're talking about any of the paid F4M components, things are different. But then you'd also be talking something other than just playback:
Flip4Mac WMV export components can be used with applications such as QuickTime 7 Pro, Final Cut Pro, Compressor, iMovie, Keynote, PowerPoint, among others, as well as within web browsers such as Safari, Firefox and Google Chrome.

Thanks.

I somehow got the impression that (free) Flip4Mac plays .wmv files independently of QuickTime, but I now see that such is not the case, so I'll have to reinstall QT to view the occasional .wmv file if the VLC(Edit:/F4M combo) doesn't work.

I just reinstalled QuickTime, if for no other reason than to keep it from becoming a to-do list.

I believe I was correct (for my minimal purposes, anyhow) in installing QT 7 rather than QT 10.

That's what I would pick.

Btw, when I said above that should you ever run into a Windows media issue where VLC is non-responsive, you could give the QT-F4M combo a shot, I forgot to mention that this wouldn't help with DRM-protected tracks.

Duly noted; thanks.