I haven't had much feedback on this but so here goes again...
I am working on several large ensemble pieces that are made algorithmically
in Max. I am sending MIDI via IAC to Digital Performer to record multitrack
MIDI including the conductor track. After exporting the MIDI from DP, I
import to Sibelius where the most beautiful notation appears. All of this
is working great. The only missing bit is the ability to send meter changes
from Max. midiout does not transmit a byte with a value of 255 - the status
byte for metaevents. In fact midiout doesn't transmit bytes with values
above 247 (EOX) so realtime messages out are apparently not possible to
control the playback controls of DP.
Gary Lee Nelson