In Sonar X2a, when I stop the piano roll to edit notes the audio engine stops. I have to turn the audio back on before editing if I want to hear the notes. Start and stop again and the audio engine stops again. (The audio engine does come on every time the roll is started, but every time it stops when the roll is stopped.) Obviously this ain't going to work. Am I missing something? Anyone else experiencing this? Thanks!

To prevent drop out / audio engine stop
 - Preference, Configuration File, increase the DropoutMsec  (default is 250), try 500.

Go to  Preferences---->Audio--->Playback & Recording and check "Play effect tails after stopping".

That should fix it.

That DID fix it. Thanks Karl!

You're very welcome.