User Guide

Chapter 13: CoreMIDI and Apple DLS Synth
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Inter-Application Communication with IAC or Virtual Ports
Virtual Ports can be used to “pipe” Band-in-a-Box MIDI playback into most CoreMIDI-compatible sequencers and
other MIDI software. This means that when you play a song in Band-in-a-Box, the MIDI information will be sent to
another application, rather than directly to a MIDI interface or Apple DLS softsynth.
One reason to do this would be to use a third party application as an Audio Unit or VST plug-in host. An example
of such a program is Rax (http://www.audiofile-engineering.com/rax/).
With Band-in-a-Box, you can either use the BIAB Virtual Ports or the IAC (Inter-Application Communication) bus.
These are just two different ways of accomplishing the same thing.
To use the IAC bus, you first need to enable the IAC driver in the Audio MIDI Setup window (MIDI Devices).
Double-click on IAC Driver, make sure “Device is online” is checked, and add at least one port.
Hint: If Band-in-a-Box is running when you enable the IAC driver, you may need to quit and re-open the Band-in-a-Box application
before it is recognized.
In Band-in-a-Box, go to the CoreMIDI Choose Ports dialog, and select IAC on all output ports.