I'm new, have X1  and tried many, MANY hours to figure it out myself.
 
How can I mute a track but still hear it on my headset while recording live to a second track.   
 
Thanks so very much!
 
 

Gonna need some more details on what exactly is going on and what you are trying to do. Usually you'd just turn down your monitors and monitor through the headphones while you track and mute/solo whatever you don't want/want to hear. However if you are looking to create headphone mixes you may want to look at what your interface can do in that regards.

Someone set this up for me and it's beyond my understanding so I'm stuck. Here's my setup.  I'm using a Uno that goes from the back of my computer to my midi keyboard into a Mackie 1202 VLZ.  My headset can be plugged into my speakers OR I can listen directly from the Mackie.

When I record, I get both the first track and (I haven't been able to do this yet) and want to hear myself solo on the second track WITHOUT recording the background music.  I hope this is clear, but I'm not sure I'm explaining it properly. 
 
Thanks

Posted before I saw the last reply. So all the sound is coming from a keyboard synth that's being direct-monitored via the Mackie? Or you have a soundcard also sending audio to the Mackie or do you record from the Mackie's Main Outs?. Sounds like you might have the soundcard set to "What U Hear" or "Stereo Mix" where you're monitoring from the output of the soundcard instead of the input, but your routing still isn't clear enough to be sure.
 
 

Thanks for your help.
 
How do I put a pre-fader Send?
 
Which would be the dedicated output on which interface?  This is where I get confused. Very confused. 

If I listen to the headset plugged into the mackie mixer I hear only the solo instrument.  If I plug the headset into the speakers I hear only the background track.  I'd like to hear both at the same time while recording only the solo track.
 
I hope this is more clear. 
 

Scratch that, and see the edit to my previous post.

I'm not using the synth -- the cords are wired THROUGH the synth into the mixer (I rarely use the synth).  Right now I have an MP3 file on track 1.  I want to mic a solo on track 2.
Make sense?

If I understand correctly, you're using the Mackie as an input mixer between your keyboard (and possibly other inputs) and the input of your soundcard. And you're direct-monitoring the live sound via the Mackie, but have the playback of recorded sound from SONAR going direct to your monitors from your soundcard output. Have I got that right?
 
Frankly I'm afraid that sorting all this out is going to get more complicated than I want to try to do via forum posts. But basically you are going to want to eliminate the direct-monitored path, and monitor through SONAR if your soundcard will support a low enough audio latency.
 
The UNO you mentioned is a MIDI interface, so no audio is going through that. And if you're not using the synth, are you recording guitar or vocals or some other miced source? I'm basically asking these questions for the benefit of others who might jump in to help because I'm about to go offline myself.
 
 

Sorry... I'm not following this routing situation at all. Ideally you want all your tracks to have their outputs going to the Master bus in Sonar (either directly or through other busses but just get them to point to the master for now) then have the master pointing to the monitor outputs on your interface or whatever is feeding your monitors. Then you should be able to hear both tracks at the same time and can adjust, mute, solo, etc.
 
So track 1 (backing track) and track 2 (live input track) > Master > Interface/Soundcard monitor out > Monitors/Headphones.
 
Sounds like you have things routed all over the place but isolated from themselves... but I'm not sure. :-/