Using FL Studio as a VSTi in Sonar X3

I think you need to set FL up as a Rewire thingy.

Have you checked all drivers are up to date? Or perhaps some setting in Sonar or FL is wrong? Just doing guess work.

I have never tried to do anything like that, so am grasping - does making sure the Enable Midi Output setting in the Insert Soft Synth dialog box help?  
 
Also, while others may have a more elegant solution, couldn't you save the midi data - export it - from within FL Studio, to a file somewhere, and then import the midi file into a track in Sonar?
 
I work with midi tracks all the time, as a keyboard player, but I always am simply working directly with midi tracks and audio tracks in Sonar - sorry I don't know more about doing what you are attempting.
 
Yet another chance for me to learn something from folks in the forum,
 
Bob Bone

to record midi you have to tell flstudio which midi channels to send to,and when loading fl studio into sonar you need sonar set to receive midi.this can be done within the channel settings in fl studio,you also may need to change a setting within fl studio preferences

Can't help with recording midi from Fl into Sonar, but to answer your latest question, I do know how to record audio: In Sonar, select the region of the FL track you want, click on Tracks, Bounce to Tracks to get the Bounce to Tracks dialog box, then select Tracks in the Source Category, and FL Studio VSTi in the Source Tracks box. By default, this bounces the audio that is playing through the Audio track down to another track
 
This process is quick, and you still have access to the midi inside FL - if you want to make changes, just delete your bounced audio, and repeat the bounce process once you've made any changes inside FL.
 
By the way, I always save the flp file from within FL to make sure I still have that in case something happens to the Sonar file
 
Hope this help

Thanks all, I'm still struggling.  Bigdogs - I can't bounce to tracks because there is nothing in the track view of the FLStudio track.  Here's what I'm doing.  Inserting FLStudio as a VSTi in a "Simple Instrument Track".  I go into FLStudio and create a simple beat.  When I go back to Sonar and click "Play" I can hear the FLStudio beat being played.  However, I can't record what I'm hearing.  If I click Record in Sonar, I can again hear the FLStudio beat, but nothing gets recorded?
 
I've tried this in Reaper and when I click record it records the FLStudio beat as audio into the track in Reaper.
 
Anyone else?

Do you want to record the FL Studio audio? Or the midi??

Sonar does not record VSTi without third party help it bounces the audio. The same results most of the time just different method. Just in case you did not understand the directions given: select the instrument track and then left mouse on the timeline and drag your mouse across the timeline this selects the range that will be bounced when there is no midi in sonar. You can figure this out by just playing your song and look to where it ends in the timeline. The timeline will be highlighted choose bounce to track from the 'track' drop down menu located just above the track pane and to the left of the timeline and audio will be bounced to what ever track you select. I haven't used FL Studio in a while, back around sonar 3, 4 or 5 rewire worked fine for me.