If I'm understanding this correctly, the page Zune on Wikipedia originally had information about the MUI re-implementation. That content is now gone, replaced with Microsoft's MP3 thingy. The page header refers people to the MUI page if they want info on Amiga Zune.
On that page, however, it directs people to the Zune page for more information on Amiga Zune (which is now gone).
So it appears as if some content has been lost in the editing frenzy. What should have been done was to turn the Zune page into a disambiguation page with links to the Amiga Zune content under a new name AND to Microsoft's player. Too late now. Maybe when everyone cools off this can be addressed.