MIDI Dynamics

[Helge Kruse]

Hello,

I want to generate a MIDI file with the correct dynamics. Although it is 
possible to have different dynamics in left and tight hand I want to 
have the upper staff the same volume as the lower staff. Therefore I 
want only to write the dynamics to the upper staff. How can I apply the 
same dynamics to the lower staff without printing it in both staves?

\score {
<<
    \new PianoStaff <<
        \new Staff = "up" \relative c'' { c\f\> d e f\! g\p a }
        \new Staff = "down" \relative c' { c\f\> d e f\! g\p a }
>>
>>
\layout { }
\midi { }
}

In this example the dynamics in the down staff is necessary for MIDI but 
no wanted for the layout.

Seconds question: Can I add another PianoStaff and assign one piano to 
the left stereo channel and one to the other? Is there a Windows program 
available to do this quite easy after generation with Lilypond?

Regards,
Helge