Hello NateMan, welcome to the forums!

As the two previous posts state there is a function labelled Help | What Add-ons do I have? that will tell you what you have installed and what you're missing.

For a more specific glimpse of the RealTracks that you do not have installed you can access the RealTracks Picker dialog (right click on any of the tracks at the top of the window and select Add/Remove RealTracks or Assign RealTracks...) and then in the lower left corner of this window there is an option to Show RealTracks that are N/A. This will display in the main section of this window all RealTracks names, with the installed tracks reading as normal and any RealTracks that are not installed displaying with an 'N/A' in front of them.

Carson
PG Music Inc.