I found the same file in Mediamonkey's plugin directory (in_mod.dll from winamp would not import, it crashed music_bee).
I downloaded the dll from mediamonkey and placed it in my fake Winamp folder (\Program Files\Winamp\Plugins) as used to fool plugin installers that I have a working Winamp loaded).
Ran MB in admin mode and imported plugin.
Re-started and tried some files from the mickrippon site and wouldn't work.
Tried with MB in admin mode and they played.
Changed permissions on the Winamp folder and sub-files and restarted MB.
xm, s3m, it and mod files are now all playing fine for me.
Also running MB 3.0.5866EDIT
found v2.2.11 and will test it (as soon as I figure out how to remove the older version)