Hey mike. Go to the controller tab and click on external windows and select audio. This starts the audio analysis. Then for your pulse scene make two steps using easy step one step on and one step off for your lights then where the speaker icon is click it to select it. Now the scene will step through the two steps according to the bpm in the audio window. You can also play with the settings in the audio window. Try this and let me know. I can also go over this in depth or make a video for you tomorrow.
Sincerely,