I've got a Korg Electribe hooked up and running. I have recorded midi events and when I play the keyboard I can see the audio meter on the audio track. In fact, I can record the output when striking the keys while recording on the fly. When I try to record the midi events I've already input. It doesn't work.  I'm sure there is just something I didn't select. I guess that's the breaks when installing new software.

So... I'm not sure I understand what you're doing.
 
Are you recording midi events in another device that you want re-sent to Sonar?

I'm simply trying to record the audio out of the Korg Electribe...a hardware drum synth into an audio track. I'm not using a programmed pattern from the unit. I have midi events on the track I input with my controller. I can however record the output when I play the controller live during record. If I play back the Korg midi track, I can see the levels on the audio track indicating it is getting the audio input (and I can hear it.) . But when I arm the track to record and proceed to record...recording doesn't happen. It's as if it's recording no signal. I don't know how else to describe it.

Hmmm. Tricky puzzle mostly because it sounds simple.
 

• You have your Korg plugged into an interface both using Midi and Audio outputs from the Korg.
• You also have a midi out from your interface plugged into a midi input on the Korg.
• The midi data records on the midi track.
• The audio data is audible through Sonar when the input echo button is pressed on the track and sounds are triggered directly on the Korg (validating the Korg Audio Out to Sonar Audio In).
• You are sending the events of your midi track in Sonar out to the Korg (not internally to a Sonar Synth). This has not been confirmed. Test the Korg with Headphones.
• When you hit record, you expect the midi events in Sonar to trigger drum sounds in the Korg that will then be output through the Audio Outs on the Korg, come into your interface and into Sonar on Audio Tracks and be recorded.

 My guess here is that

• your midi track is NOT routed back to the Korg
• or that the Korg is no accepting the incoming midi events to trigger it's sounds.

 
If you just put on headphones from the Korg and listen directly when you hit play on Sonar, what do you get? If nothing, then we should trouble shoot the problem of the midi events on the Sonar track not triggering the Korg Synth.
 
From the Sonar side, you want to ensure that your midi track has an output set to go back out a midi channel of your interface.
 
Please, straighten me out if I'm all off track here.

It works now. But I'm not certain of what I did or why it works now and didn't before. I'm going to investigate further and see if I can find the reason.
 
But, the routing should have been fine considering... I was getting midi events on the track it was supposed to get. And, the audio track was getting the audio input it was supposed to get. Not sure why the midi channel seemed to be muted during record on a different channel. Again, I'll investigate and see if I can find the reason and get back.
 
This was about the time I bounced an audio track of that audio channel, of course with no audio. But for whatever reason, that's about the time it started to record on the unbounced track. Probably un-related. I don't think I toggled anything in preferences either. Not sure why one wouldn't want it to work in this manner.

Glad it's working!