Apple MainStage 2 - Manual (Page 69)

Note: If the MIDI Out parameter of the external instrument channel strip is set to the
external instrument when you map the screen control to the Program change parameter,
a program change (Program 0) is sent when you create the mapping. If you are editing
the program on the external instrument, your changes may be lost. To map the screen
control without sending an immediate program change to the external instrument, choose
None from the MIDI Out slot of the external instrument before you create the mapping,
then choose the external instrument in the MIDI Out slot. No program change is sent
until you move the knob or fader.
Using the Activity Monitor
As you work on your concert in Edit mode, the Activity Monitor in the toolbar shows the
current CPU and memory information as well as received MIDI messages. The CPU section
of the Activity Monitor glows red to indicate a CPU overload condition.
The Memory section of the Activity Monitor glows yellow to indicate a low-memory
condition. If an extreme low-memory condition occurs, an alert appears, warning you to
save the concert before MainStage quits. Low-memory conditions can be caused by
having too many memory-intensive channel strips or plug-ins in a concert or by using
other memory-intensive applications (including ReWire applications) together with the
concert. If a low-memory condition occurs, try reopening the concert and consolidating
some memory-intensive plug-ins or channel strips.
Deleting Channel Strips
You can delete a channel strip if you decide you no longer want it in a patch.
To delete a channel strip
1 Select the channel strip in the Channel Strips area.
2 Choose Edit > Delete (or press the Delete key).
Mapping Screen Controls
After you have created your patches and learned controller assignments for the screen
controls you want to use, you can map MainStage screen controls to channel strip and
plug-in parameters to modify the sound of your patches while you perform, or map them
to MainStage actions to control other functions.
You map screen controls to parameters in Edit mode. After you learn controller
assignments (in Layout mode), the screen controls in the workspace do not respond to
movements of physical controls on your MIDI hardware until you map them to channel
strip parameters (in Edit mode). There are two ways to map screen controls to
parameters: by visually selecting parameters on channel strips or plug-in windows or by
choosing parameters in the Parameter Mapping browser.
69 Chapter 5 Working in Edit Mode