Assuming you already have the the record device selected - Go to "View> Record options" - Then select "Arm" (aka, record ready) from the transport (keyboard shortcut: Ctrl+ Shift+ A) - Viewing the record level meters in the already open 'View> Record' options' window, make any necessary record level adjustments using the source's output or soundcard input. - Select "Record" in the transport (shortcut: Ctrl+ R) to commence recording.