MIDI settings

[fiëé visuëlle]

Hi ho!

It's nice that LilyPond plays my chords in MIDI, and I recognized I  
can set the instrument with
\set ChordNames.midiInstrument = "flute"

But how to set the volume? Dynamic marks like \p don't work in  
chordmode.

Further I'd like to get every MIDI file with "mid" extension instead  
of "midi" - MacOSX doesn't recognize .midi, and Windows doesn't either.
How can I setup that?

Greetlings from Lake Constance
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fiëé visuëlle
Henning Hraban Ramm
http://www.fiee.net
http://angerweit.tikon.ch/lieder/