Bummer.

I tried doing something similar using my Tascam recorder. I could never get a good balance between the backing track and the guitar even when using a camera stand to position it in the middle of the room. That's why I gave up on that and went with a multitrack recording solution.

That sounds complicated, but it not as much as you would think. You don't need a multitrack sound card, you need a soundcard that will support full duplex which means you can hear what's being recorded in real time. Your PC may even support this right now. I use Adobe Audition 3, which can be had for free now from Adobe. There is also Reaper which is pretty cheap and Audacity which is free.

Only problem with this is it assumes you can download the backing track to incorporate it as a track in your software. The backing tracks for the song lessons on guitar tricks can't be downloaded, so you end up having to look elsewhere.

Good luck with your second go at it tomorrow.