Decided to attempt to upgrade LilyPond music notation software again (this had been giving me trouble I had no idea how to solve; I hoped the people on the FINK project were working on that part themselves). Worked. Now have LilyPond 2.10.25 installed; when I get back from shopping will test it. Still need to learn how to use it- I'm only used to version 2.0.1, from years ago (but my 2003 Mac upgraded to OS 10.2.8 couldn't install anything more recent than that!)
See www.lilypond.org about the program and my image gallery and stash for some examples of what it does (and www.imslp.org has some too, e.g.
this IMSLP page for Felix Mendelssohn's precocious (written by a 16-year-old- not so much precocious piece, as by a precocious person :) ) string octet:
http://imslp.org/wiki/String_Octet%2C_Op.20_%28Mendelssohn%2C_Felix%29
- the second PDF listed on the page was typeset using lilypond.org (the first PDF was scanned in from score, as is more usual on IMSLP; Dover Publications reprint, in fact.)
(Another example, Beethoven's 4th string quartet, can be found
here.)