You can set up your aircraft at the departure airport, load a flight plan in PF3, and connect to the sim in the usual way. Once AI traffic is active, you can manually tune the various PF3 frequencies and listen to the chatter. This would include Clearance, Ground, Tower, and Departure or Approach. You can find the PF3 frequencies for the airport by using the PF3 Display or Web Display utilities, or selecting 'Display COMs' on the Advanced Options screen before connecting. There may be other ways to do it but this should work.