The Sync, Snap To, and Play From pop-up menus in the bar at the bottom of the window control various aspects of playback and synchronization of the audio material.
Sync, Snap To, and Play From parameters
Sync pop-up menu: Enables or disables synchronization with the MainStage tempo and clock.
Snap To pop-up menu: Determines how Loopback starts, in play or record mode, when stopped. It also quantizes the tape loop length “on the fly” by stopping the first take.
Off: Loopback starts immediately, without waiting.
Beat: Loopback starts or stops at the start of the next beat.
Bar: Loopback starts or stops at the start of the next bar.
Loop: Loopback waits for the amount of time defined by the Length parameter.
Play From pop-up menu: Determines the playback start position within the audio material.
Loop Start: Playback starts from the beginning of the audio material.
Relative Position: When you stop and restart the Loopback instance, playback continues as if the plug-in had been playing continuously, without interruption. This is useful when several Loopback instances are playing together, or when you are using Loopback instances with Playback or Ultrabeat instances, allowing you to effectively “mute” and “unmute” instances while keeping them in sync with each other.