Nils Gey wrote:
The MIDI file specifies a port number, which ist just a number from 0
to N-1; it's the player's responsibility to map this to actual ports.
Because of this unpredictable mapping, the MMA has declared the port
number meta-event obsolete. Officially, one should now use the port
name meta event , but the mapping of the MIDI file's
port names to the playback device's port names does not happen to be
any less unpredictable ...
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