They are also romanizing using Hepburn romaji. I don't remember the various specifications, but they stated they're dropping things likes 'ou' for long 'o' and from their Yuu- examples, they're also dropping double 'u'. Maybe even dropping 'ei' for long 'e'. So um.... yeah... get as close as you can.

As from Xaela ... does ANYONE study Mongolian, ever? Other than some all beef foods?