I did it myself with no problems except one minor one; if you closed WMP without stopping the music first, the service would hang in the background, preventing you from starting WMP again until you stopped the service in Task Manager. Even the bonus pack worked fine on it. Ran a nice mp3 server on a small workgroup in the lab at my old chemist job.

Also I had to create a registry script to delete the registry entries for the CDR drivers. (Would pop up error in event log if I didn't). Never bothered to modify the original WMP files so I didn't have to run the .reg after.
 
WMP 7.1 runs fine in NT4. It's just another Microsoft marketing scheme. Go Linux Go!

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Also I had to create a registry script to delete the registry entries for the CDR drivers. (Would pop up error in event log if I didn't). Never bothered to modify the original WMP files so I didn't have to run the .reg after.

I went and had a play with the installer.

It just uses an XML file for determining installation information, so all you have to do is snip out the section for the adaptec component, et voila.

Microsoft's artificial requirements are frustrating at times...