lilypond-book and \include

[Anas Ghrab]

When I use lilypond-book with a .ly file (or a tex file) containing  
more than one \include, the output contains only the second include.  
For example :
-----------------------------------------
\documentclass[a4paper]{article}
\usepackage{graphics}

\begin{document}

\begin{lilypond}
\include "banjkah.ly"
\include "busalik.ly"
\include "buzurk1.ly"
\end{lilypond}
\end{document}
---------------------------------
Gives :
--------------------------------
\documentclass[a4paper]{article}
\usepackage{graphics}

\begin{document}

{%
\parindent 0pt
address@hidden
\ifx\preLilyPondExample \undefined
  \relax
\else
  \preLilyPondExample
\fi
\def\lilypondbook{}%
\input lily-658096907-systems.tex
\ifx\postLilyPondExample \undefined
  \relax
\else
  \postLilyPondExample
\fi
}
\end{document}
-------------------------------------
And the lily-658096907-systems.tex contains only :
---------------------------------------
\includegraphics{lily-658096907-1.eps}
% eof - 'eof' is Makefile marker; do not remove.


Did I do something wrong ?

Thanks,

---
Anas