The sequencer device directly supports one MIDI stream connector that is always enabled. As it is likely that an application will need to select the output destination on the amplifier-mixer device, the sequencer device will attempt to provide the following connector services to an application. If the requested connector is not available, the command will fail.
Additional connectors may be available on the ampmix device. To control these connectors, obtain the device ID of the ampmix device using the MCI_CONNECTION message and issue the connector command directly to the associated amplifier-mixer.
To determine which connectors are supported by an amplifier-mixer device, use the MCI_CONNECTORINFO message.