Lines of music

[Marco Caliari]

Hi.

I would like to produce an image with a single line of music (say of 
dimension 2cm x 10cm, not an a4 paper with a single line). With Lily 1.6.* 
I used 

\begin[eps,linewidth=10cm]{lilypond}
...
\end{lilypond}

and lilypond-book. Is the option eps supported in Lily 1.8.1? 
It is not documented, it is accepted by lilypond-book (and I have the 
image as wanted), but then latex gives me "Undefined symbol 
\lilypondepswidth". 
Is it possible to obtain the image (png, if possible) directly with 
ly2dvi?

-- 
Marco