I think there is something I am missing here. Many of Mapbox Products are dependent on font types I am not finding available in the resources.
For example, mapbox-studio-outdoors.tm2, relies on 'Arial Unicode MS Regular'. The mapnik fonts located at C:\mapnik-v2.2.0\lib\mapnik\fonts only contains 'Deja Vu-sans' by default.
From Mapbox github I can find a list of additional fontsets including opensans, crimson, source-sans-pro and more... But no 'Arial...' anything?
Where should I be looking for adding additional fonts?