Apple MainStage 2 - Manual (Page 130)

Note: If there is no Playback plug-in in the patch, an alert appears when you try to add
a waveform screen control.
When you map the waveform screen control to the Playback plug-in, the waveform for
the audio file loaded in the Playback plug-in appears in the waveform screen control.
When you press the button you mapped to the Play/Stop parameter, the audio file starts
playing, and you see the waveform move across the waveform screen control.
You can add screen controls for other parameters, including Fade Out, Cycle, Tempo, and
so on, and map them to the corresponding parameters in the Mapping browser or in the
Playback plug-in window. You can also map a parameter text screen control to the File
field and have it display the name of the audio file being played.
Using the Playback Plug-in
The design of the Playback plug-in allows you to use it in many different ways. You should
plan how you intend to use the Playback plug-in when you are designing your concert
to use it most effectively. You can try out different placements and settings to decide
how you want to use the Playback plug-in in your concerts.
You start playback by sending a Play command to the Playback plug-in using a screen
control, such as a button, mapped to the Play/Stop parameter of the plug-in. To stop
playback, you send a Stop command using the same parameter. Alternatively, you can
set the plug-in to start when you select the patch or set, or when the Play action is
triggered. You can control other parameters of the Playback plug-in while you perform,
including the Fade Out and Cycle parameters. If the audio file contains marker information,
you can use the Go To Previous Marker and Go To Next Marker parameters to shift playback
to different parts of the audio file, or use the Go to Marker action to shift playback to a
specific marker.
Note: When mapping a screen control to the Go to Marker action (in the Markers
submenu), set both the Button On and Button Off parameters in the Screen Control
Inspector to the value of the marker, to ensure that the mapping works correctly.
130 Chapter 8 Playing Back Audio in MainStage