Henrique wrote:
>
> I'm using many \startextract's to write small scores
> and up to three or four of them could fit in one line.
> How can I make the extracts not to start new lines ?
>
If you use musixtex.sty inside LaTeX you can do the following:
\begin{minipage}{20mm}
\begin{music}%
%% your musixtex code goes here
\end{music}
\end{minipage}
If you put two or more of these together with no blank lines in between,
LaTeX will put them on one line as far as possible. Basically each
minipage looks like one letter of text from the outside.
Dirk