Thanks goes to translucent over at the greenbutton for this one.
http://thegreenbutton.com/forums/thread/254447.aspx
In case anyone is interested, you can run the following command on the Niveus movie library msi that can be downloaded from their site:
\windows\system32\msiexec /a <full path to the msi file> /qb TARGETDIR=<some dir you want all the files to be dumped into>
This will provide 4 files:
NiveusMovieLibrary.dll (the actual media center app)
LibraryConfig.exe (a .net app allowing you to add/remove monitored directories)
NiveusMovieLibrary.png (an image)
NiveusMovieLibrary.xml (this appears to be related to the install of the .dll file)
So, I'm not a big wix person so the xml file may be related to that, or it might be related to registry entries or something. Anyway, if the dll file is manually registered into media center (can't recall the method to do this) then you should be able to install this app and bypass the Niveus Media Center machine check that the installer tries to do.
This is an information post only, I'm not suggesting anyone actually do any of these steps.