Hello from the Sonar forum

. I'll try to give this a go. I'm on X1, but the steps should apply to Sonar 8 as well.
First, let's get the basics working on one machine.
1. Open Vienna Ensemble Pro Server.
2. Open Sonar, load a project.
3. In your Sonar project, load the soft synth: Vienna Ensemble Pro.
4. The VEP soft synth should say "NOT CONNECTED". Press the Connect button, and you should see "127.0.0.1 localhost [64] (NEW)" under AVAILABLE INSTANCES. (the [64] is for the 64-bit version of the server. The important part is the 127.0... part)
5. If you don't see that, then there's a problem.
6. Select the 127.0... and press the CONNECT button.
7. That should have loaded the main VEP interface.
These steps are all in VEP
8. In VEP make sure you're in the Mixer interface. F3 will toggle it on and off.
9. Right Click and Add Instrument. This will load a "Vienna Instrument" plugin.
10. Load an instrument into that Vienna Instrument. At this point, doesn't matter which one. If you lose the plugin's UI, double click the track name in the VEP mixer to open it up.
11. At this point, when the instrument is loaded, you should be able to click the little piano keys at the bottom of the Vienna Instrument and it should play through VEP into Sonar.
Now back to Sonar.
12. Set a MIDI track (insert one if you don't have one) output to the Vienna Ensemble Pro soft synth.
13. Record or Enter MIDI notes into that track.
14. Play it back, and all should be well.
The main thing about VEP, is that the Vienna Ensemble Pro soft synth in Sonar handles all the audio output of the VEP mixer interface, including MIR. MIR is another level of complexity. Report back, and then we'll try to tackle MIR.