I can't get audio from tracks I recorded before my problem. I can record midi (audio & synth no activity whatsoever).  I have copied midi tracks into an audio track that has a synth assigned to it, but no activity. I'll check the buffer size in my ASIO panel; no other applications are open. It's amazing that everything is set just like it has been for yrs & also, that Ableton works just fine. Could it be a computer problem? I have the top of the line HP that I ordered from HP four yrs ago - - we do have a few other problems with it - - only Firefox works - - I have to go to Firefox to get on AOL. The microsoft E also does not work & the computer is a little slower to respond to commands. THANKS FOR YOUR  SUGGESTIONS!!
 
 

How long has this been happening?   Have you been updating SPLAT each month?  Maybe you should try to rollback (in the command center) to a previous version just to check and see if it changes anything...  Good luck!!

It's been a week now & still no solution. I did try to bring up the Sonar X3 version to check to see if it worked properly, but my computer froze. I'm going to have a local computer repairman check to see if my I have a virus or some other problem with my computer. Obviously he won't know anything about using a daw, but at least maybe I can rule a computer problem out, to make sure it is in fact Sonar Platinum causing he problem. I downloaded Ableton Live Trial and everything works properly in it - - even all my Sonar instruments.
 
Thanks for trying to help - - I'm going crazy trying to solve this problem.

Can you share a simple project using Cakewalk synths that's not working? Just want to confirm this is a system-specific issue.

Since no audio at all is coming from Sonar I would assume it's an interface configuration problem. Have you tried another driver mode? E.g. MME. It's horrible but should work with almost any device.

As a last call I think you might be able to delete your aud.ini file (backup first) to reset a few things.

Hawkthornhill4366
I don't have always echo current midi enabled - - I always have to check the echo box to enable it. Plus, my midi works just fine -- just no activity in audio tracks or when I put in a synth ie If I insert individual audio & midi tracks & then a synth in my third track, only the midi track of the three tracks respond.

What does this mean - three tracks to play a soft synth? What are the inputs and outputs of these tracks set to? If you use Insert>Softsynth>(softsynth name)>First audio output you get two tracks - a MIDI track and an audio output track.

I loaded an empty project I use as a startup project for various things. It has no tracks in it. I insert a MIDI track in it and whether echo is on or not when I press a key on the MIDI keyboard and the MIDI meter lights up. It shows that a MIDI event is occurring plus the velocity is shown. This is the active track and it the only one in the project. 
 
I next inserted another MIDI track an played a few keys on the mIDI keyboard and the same thing happened. The new track was the active track. Echo is off.
 
The MIDI meters show activity on the track. Echo has nothing to do with it. It shouldn't matter what the condition of echo is for MIDI whether its coming from a keyboard or has been previously recorded. This is not a simple instrument track. It is a MIDI track only. Its set to none for channel, for bank and patch. Its set for MIDI omni in the input. In my case its going to a hardware synth.  These are my defaults.    
 
Use the MIDI meters to see if you are getting activity. If not check your connection. As a test load a MIDI file and play it back.  See if the MIDI meters work showing activity on each track. 

Hawkthornhill4366
It's been a week now & still no solution. I did try to bring up the Sonar X3 version to check to see if it worked properly, but my computer froze. I'm going to have a local computer repairman check to see if my I have a virus or some other problem with my computer. Obviously he won't know anything about using a daw, but at least maybe I can rule a computer problem out, to make sure it is in fact Sonar Platinum causing he problem. I downloaded Ableton Live Trial and everything works properly in it - - even all my Sonar instruments.
 
Thanks for trying to help - - I'm going crazy trying to solve this problem.

What windows version? Win 10 can mess with some interface drivers...

Hawkthornhill4366
If I insert individual audio & midi tracks & then a synth in my third track, only the midi track of the three tracks respond.

Sorry, but I'm confised by this.

A software synth generally requires a MIDI track for the MIDI and a single mono or stereo audio track, unless you're using a synth with multiple audio outputs. You seem to be saying you create and audio track,then create a MIDI track then create another audio track and put the synth in that. Am I understanding you correctly?

If that is indeed what you are doing I suggest you insert a synth using the synth rack and in the options window select a single audio track and a single MIDI track. That will create a MIDI track correctly routed to the synth in the audio track. That should work, and all versions of Sonar are perfectly capable of using MIDI and software synths, if they weren't I suspect there would be hundreds of complaints on this forum and there isn't.....

From what you are saying it sounds to me like you have the routing between MIDI and the synth audio track set up incorrectly. Check the output of MIDI tracks is indeed pointing to the audio track the synth is sitting on and that the input of the audio track is pointing to the correct MIDI track, also that the MIDI track and synth are set to the same MIDI channel.

I suspect the reason Live "just works" is that it has routed the synth and MIDI correctly using its default settings while by the sounds of it you are not using Sonar's default routing but something else of your own that does not work for some reason.

John
I insert a MIDI track in it and whether echo is on or not when I press a key on the MIDI keyboard and the MIDI meter lights up.
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The MIDI meters show activity on the track. Echo has nothing to do with it. It shouldn't matter what the condition of echo is for MIDI whether its coming from a keyboard or has been previously recorded.

Unless there's a config setting I don't know about, I think you're mistaken about this, John. MIDI track meters are output meters only. They only show activity if existing MIDI is playing back or live input is being echoed. Even arming the track does not switch the meters to the input side as you might expect.