bandso
You can also listen to your mix against some other "professional" songs of your liking really easy with magic A/B
https://www.samplemagic.com/details/184/magic-ab
You can do that easily in Sonar itself. Import a stereo commercial track and route it to a bus with master as output. Mute that track. Set up another bus with master as output and route all your own tracks and busses through that, don't mute it.
Group the two bus' mute buttons somthat when you mute one bus it unmutes the other and adjust the bus volumes as required to get them to around the same volume.