If you use a USB ASIO (USB to a Mixer) Take advantage of using your PC speakers as a Cue/PFL.
Go to File, Settings: Track Editor Audio Device to Speakers
To Cue or PFL On the main screen, double Click any Title NOT on the air to bring up the PFL window for that track. If you use a mixer ASIO device (USB) and the PFL is set to Speakers, you can hear the track OFF the air.
Also See my notes on storing additional text in Out Cue.