Hey fflvrgst,
Thanks for the response. I am on a really tight budget(under $100 CDN). Yes, I am using the mp3 line in for the backing track. I have been trying to record the guitar with this usb mic I have. However, the DAW that I am using(Soundtrap) does not support monitoring so I have to try and line up the tracks or they will not be in sync. So far I am having a lot of trouble doing this. I figure the best way right now is to just record from the line out of my Spider IV.