fonts missed by 'plain' dvips when running after lilypond-book

[ario]

After finding the file missfont.log created by dvips, I'm one step
closer to the problem. Apparently when I run dvips after running
lilypond-book on a tex file it uses other fonts (directory?) than when
it's invoked by lilypond itself on a plain .ly file, resulting in
garbage output produced by dvips when invoked manually.

The missfont.log files says:
mktexpk --mfmode ljfour --bdpi 8000 --mag 1+0/8000 --dpi 8000
feta-nummer10
mktexpk --mfmode ljfour --bdpi 8000 --mag 1+0/8000 --dpi 8000 feta20
mktexpk --mfmode ljfour --bdpi 8000 --mag 1+0/8000 --dpi 8000 feta-din14
mktexpk --mfmode ljfour --bdpi 8000 --mag 1+0/8000 --dpi 8000
feta-nummer10
mktexpk --mfmode ljfour --bdpi 8000 --mag 1+0/8000 --dpi 8000 feta20
mktexpk --mfmode ljfour --bdpi 8000 --mag 1+0/8000 --dpi 8000 feta-din14

but there's no hint on where and how to put these fonts.
So I feel that I'd have to point the manually invoked dvips to the same
fonts as the dvips uses when automatically invoked by lilypond.

Any hint?

arie