Help with fonts (Was: Non-latin scripts howto?)

[Gilles]

Hello.

> I can't comment on why it works for me and not for you.  When it was
> announced that the Unicode support was in there, I tried it and it
> worked.
> 

I copied the following sample:

  http://lilypond.org/doc/v2.6/input/regression/out-www/lily-1601320616.ly

On the resulting postscript, the Bulgarian and Portuguese are fine.
But not the Japanese nor the Hebrew.  No Japanese fonts are installed, 
but Hebrew fonts are!

Could someone point me to maybe some command to be run to make lilypond
aware of these fonts?  (I'm on Debian).

Thanks.
Gilles