Am 2009-06-02 um 10:38 schrieb Lutz Haseloff:
> Can you run "lilypond" on the command line? I.e. is it in your PATH?
> Yes.
>
> Is GhostScript installed and can you run "pstopdf" on the command  
> line?
> Yes.

Please try the attachment (put it in your project directory and rename  
it to t-lilypond.tex).
If you don't get "LilyPond ERROR" messages, the binaries are probably  
not found.

Greetlings from Lake Constance!
Hraban
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http://www.fiee.net/texnique/
http://wiki.contextgarden.net
https://www.cacert.org (I'm an assurer)