Okay, here's one for the technical at heart.
Windows Media Player can get all kinds of plug-ins - One I'm interested in is the Cyberlink MP3 PowerEncoder plug-in (WMP9 use can find the list by selecting 'Download Plug-ins' in the menu at the top).
I've had two different versions of it - One through eMule from Sharelive and one through K-Lite - And I've had the same problems. I install it, add the serial, then do the configuration that pops up after Setup. After that, I restart WMP9 (which was already closed during installation), and the plug-in doesn't show up. I use the options to try to add it using the Plug-Ins tab, but when I select the DLL for it it reports that the plug-in can't be added. There's no program installed (apart from the configuration program) - AFAIK the plug-in runs through the DLL.
Any other WMP9 users have that problem? Anyone got any solution around it? And please don't resort to 'use another MP3 decoder' - PowerDVD works wonders for me so I kinda trust the Cyberlink name for the media plug-ins.