i see this is the fix for the audio looping click problem. i want to make sure im doing this right, so how is this done?
 
what i did: click metronome buttons, turn on for both playback and recording, and then went to the metronome bus (with out sending) so it just on metronome bus, then mute metronome. is that right?

Yes. The output of the metronome is assigned in preferences. By default, the Normal templates in recent versions of SONAR set up that bus and routing for you, so all you have to do is enabled the metronome for playback and mute the bus.