http://www.organfax.co.uk/news.html

Bill

So it isn't actually a new Music Finder (perhaps overcoming the limitations of where user styles need to be in the limited RAMdisk to be used here), but actually just a new set of Music Finder ENTRIES, that correct the cryptic names in the original MF.

Mind you, if they have to be put in that way due to copyright issues, how come Yamaha themselves can issue a corrected set with the proper names in, as an afterthought?

Diki. I believe it's a copyright issue in certain county's which stops Yamaha providing the correct MDF names when the product leaves the factory.
After that it's personal use for each owner to download the corrected file.