Works a treat here...
I have the following codecs installed in /Library/QuickTime:
DivX Decoder.component v6.2.2 by Divx, Inc.
DivX Encoder.component v6.2.2 by Divx, Inc.
Flip4Mac WMV Advanced.component v2.1.1.70 by Telestream, Inc.
Flip4Mac WMV Export.component v2.1.1.70 by Telestream, Inc.
Flip4Mac WMV Import.component v2.1.1.70 by Telestream, Inc.
AC3 Component.component v1.0
I've saved the page generated by Safari using Help > Installed Plug-ins
here which will list the plugins I have installed for Safari.
edit: ignore the link above -- it looks like it'll just generate a list of the plugins on your machine via some javascript trickery -- give me a minute or two to save the actual list of my plugins!
edit 2: here's a PDF of the page showing my list of installed plugins.
Basically, all I've done is grabbed the Mac versions of the usual plugins from divx.com and flip4mac.com. I don't believe I've changed the version of Flash installed with the OS.
I'm running a MacBook Pro with OS X v10.4.9
edit 3: Although Apple do indeed bundle Flash (many websites would be virtually naked without it), I wouldn't expect them to bundle video codecs beyond those they develop themselves. Purely because that's a lot of code they don't get to do QA on which might not be suitable for bundling. Microsoft take exactly the same approach with Windows. Apple could make acquiring the correct codecs a little easier and, to their credit, they've finally updated the
Quicktime Components page with links to common codecs such as DivX and Xvid.
Oh, and by the way, that tv-links site is very, very slow even to load static pages... some patience might be in order!