Rendering with MIDI tracks

Rendering projects with MIDI tracks is exactly the same as rendering any other project and is discussed in detail in Chapter 12. Just to repeat If you render a project and find that the MIDI track is silent, but the track previews when you play back the project, the problem is that you are not using the Master device for the MIDI tracks. 

MIDI tracks must be routed through the Master bus in order to be rendered with the project. All other devices are external to ACID. 

ACID MIDI tracks need to use the Master bus (DirectX SoftSynth) to render projects. Other MIDI devices listed on the Bus Selector (see Figure 10.2) act as external devices and are used only for playback. All MIDI tracks in a project automatically use the same device changing the device on one MIDI track changes all MIDI tracks. As one example, if you are using a Yamaha SXG software synthesizer, your project will sound as if the MIDI track was being mixed into the project. In reality, the audio tracks in the project are mixing in ACID, but the MIDI track is being processed by an external device (software, in this case) that is mixed with the output from ACID outside of ACID on the sound card. Therefore, when you render the project, the MIDI track is silent. There is a way around this problem, however. 

The first item allows you to select which devices (hardware and/or software synthesizers) are used for MIDI playback and tune code generation. Selected items will show up on the device list in the track header for MIDI tracks. Although you can select from a number of devices for playback, only the default Master hus (DirectX SoftSynth) will allow you to render projects with MIDI files. 

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