Use external effects in Sonar X1

Right click in an audio track fx bin and select "external insert". That should insert an entry in the fx bin and open the plugin window which gives you places to insert the send/return stuff plus allow you to adjust things to take account of any delay in the audio caused by the time taken to send it round the external routing.

If you need to send the output of two audio tracks to the same effect then capture the output in either (or a third) I'd suggest using two mono tracks a sources, pan one hard right and the other hard left, and set the external insert output of each to the fx unit's USB. Set the returns to whichever audio port the fx unit sends it's output to.

You can also set the returns in the tracks to "none" and use a fresh audio track to record the output of the fx unit should you need to (assuming there's nothing in the fx unit's setup to prevent this).

The problem could be that you've got more than one audio interface to deal with here.

I'm not familiar with the effect in question, but looking at TC-Helicon's website the USB out streams audio, yes?

If so then (assuming you're using ASIO drivers), as far as I know you can only use one audio interface in Sonar (I think that's because of the nature of ASIO itself - if I'm wrong someone will be along to correct me no doubt :-) ) . To be on the safe side, you have activated the TC as an audio device in perferences? If not and activating it does the trick, then ignore the above.
 
I've no experience with using multiple audio devices at the same time (never had a need to) but I think using WDM drivers may get you round this (at the cost of some latency and time offset discrepancies between the two devices that may mean doing a bit of editting of the audio afterwards). Worth a try anyway perhaps.
 
Can you hook up your soundcards ins/outs and use the audio inputs/outputs on the fx unit that way? Simplest option. Or disable the sound card in Sonar, enable the TC, use it for the job in hand then revert tou your usual interface?

OK I have made a mistake here. In the preferences in Sonar the TC is showing as a Midi device not an audio device. It connects to the PC via USB looking on the TC disk there are no drivers that get installed.

So I guess the USB Imput is just for MIDI and Firmware updates which dosent help a lot

If you want ot use the external insert feature then you're talking about passing some audio out of SONAR via your sound cards analog outputs into an external devices ananlog inputs, processing it and then returning it to SONAR via your Audio cards inputs.

this means that your audio card needs to have the necessary inputs and outputs to do that as well as monitor the sounds via another pair of outputs.

As your device is connected via USB it is in fact another Audio card inwhich case its inuts and outputs should be available in SONAR's IO without resorting to external Insert features.

Ok Thank you guys for all your input. I have Found that setting My TC Voicelive to USB insert allows me to USE WDM/KS drivers Ihave tried ASIO4all but that does not work.

OK so using the WDM drivers I am supposed to do this
VoiceLive Touch’s left input and the guitar track to the right.

Doing that I can use external insert for the vocal track and choose the TC but when  try to do that for the audio guitar track I laid down to control the Harmonies in the external insert there is NO TC option to choose. I am new to this and very confused bur I guess it is a learning curve.

If this does not work is there a way in sonar to send a midi track to control the harmony

Btw, you were very close to having the VLT properly configured!  The only thing you missed is physically removing the connection between the VLT's AUX OUT and your DAW.  Just unplug the cable coming from the 'GUITAR THRU' port on the VLT and you would've been able to keep everything in the digital domain.  By going through your mixer as a regular FX Loop, you're going from digital to analog and back again for no good reason.  If you're still doing this 'your way', I'll be happy to help explain it further if necessary.  I'm running X3 with a VOICELIVE Touch 1.

-Skep