Extending feta font

[Andrzej Kopec]

How to or is is possible (at all, easily at least) to insert (and use inside 
lily) custom
glyphs to feta musical font? I know, that almost anything could be inserted as 
PS, but
this way would be more confortable, because of scaling and portability 
(operating with
bare stencils is much harder than designing things with graphical interface).

Best,
/ak/