The Action menu is found to the top right of the waveform display and contains the following items:
Export Tape Loop: Shows an export dialog, where you can name and choose a location to save the tape loop to an AIFF audio file.
Import Tape Loop: Shows an import dialog, where you can select and import a previously exported tape loop or any short audio file.
Clear Tape Loop: Deletes the entire tape loop in the Loopback plug-in.
Monitor: You can choose one of the following monitoring modes for the Loopback plug-in: On (monitoring is always on); During Record (monitoring is on only during recording); or Off (monitoring is disabled).
Note: Some mixer routing configurations may result in no audio being heard through Loopback. Use this menu command if you encounter this situation.
When Patch or Set is Selected: You can choose one of the following functions to be performed when the patch (or set) containing the Loopback plug-in is selected: Do Nothing (the default); Clear (empties the entire tape loop); Start Playing (starts the plug-in playing at its current settings); Start Recording (starts recording the first take at the current plug-in settings); or Clear and Start Recording (clears the existing tape loop and starts recording the first take at the current plug-in settings).
On MainStage Clock Start: You can choose one of the following functions to be performed when the MainStage clock starts: Do Nothing (the default); Clear (empties the entire tape loop); Start Playing (starts the plug-in playing at its current settings); Start Recording (starts recording the tape loop at the current plug-in settings); or Clear and Start Recording (clears the existing tape loop and starts recording a new tape loop at the current plug-in settings).
Set Concert Tempo After First Take: With this item selected, and Sync set to Off, clicking Record starts recording the tape loop but does not start the MainStage clock (if it is stopped). When you click Record a second time (or click Play), recording stops and the tape loop continues playing. MainStage sets the Length and Tempo based on the duration of the recorded take, and starts the MainStage clock.