I know this is an old thread, but in case you're still wondering, the "two tracks" are two mono tracks, AKA tracks 1/2 or 3/4, or 3/8, or any combination thereof. Keep in mind that all odd numbers are matched to "input A" (which you can set to the internals, line in, or mic in) and all the evens to "input B." So if you're recording tracks, you can use one mono odd track, and one mono even track at a time.
The DP-008 is more useful for creating demos and other recording situations where you want overdubs, a bit of processing, etc. It's not really made for recording live shows.