[XeTeX] Using Concrete (and other) fonts with XeLaTeX

[Mike Maxwell]

Peter Dyballa wrote:
> Does fc-list list URW Palladio? If not, then you have two options:  
> tell XeTeX the path name of the font file or tell libfontconfig where  
> this font (file) is. 

We've been having trouble getting certain fonts to get used.  If we put 
them under /usr/share/fonts/, they seem to get noticed, but for various 
reasons we'd prefer to put them in a separate directory, and to have 
them noticed by Xetex *without* having to use the ExternalLocation 
argument to \fontspec.

Is it the case that if fc-list lists a font, Xetex can use it without 
the ExternalLocation arg?
-- 
    Mike Maxwell
    What good is a universe without somebody around to look at it?
    --Robert Dicke, Princeton physicist