I've heard a lot of sound clips on these boards and I'd like to make my own. What do I need in order to do this? Meaning I'd need backing music like drums and bass, and then I'd lay my own guitar tracks down. The backing music could either be from a recording where I can strip off the guitar and add my own (preferably), or pre-recorded. The problem is I'm not sure what I need! Is it a mixer, something to record with like one of the TASCAM things, etc.? Any recommendations would be appreciated. I am fairly computer savvy, and all of my stuff is midi/direct recordable I believe.