Tracks will not load and play

I have a problem that does not seem to be experienced by others. When I click on play the screen flashes quickly optimizing database then first track loading. The track fails to play. I have tried deleting tracks and adding new tracks as well as a fresh install. Basically, I can not use this wonderful software to play music.

I have a licensed version of Version 2.6.5 and Running on MacBook Pro with OS 10.12.2.
Are there any other procedures that I can try to resolve this issue. Thanks