This example illustrates playing a MusicKit scorefile on an external
MIDI synthesizer. It reads the scorefile from stdin and plays it 'on
the fly', i.e. as it is read.  This is analagous to the programming
example 'playscorefile2', which plays a scorefile on the DSP as it is
being read. An alternative is to first read the scorefile into a MKScore
object and then play it. See Utilities/ScorefileUtils/playscore.tproj for
such behaviour and a more complete score player tool.

In the example program, the midi channel information for each part is gleaned
from the part 'info' statement in the scorefile. If none is found, all
notes go out on MIDI channel 1. 

