Well, when you're multi-tracking like we are, time indexes are what synch everything up. So if you consider that the beginning of my backing track is time 00:00, then the time index for your track will be whenever you start playing. If you have the cursor at 02:30 when you start recording your solo, then that would be when I have to put it in for mixing (or else it would sound jacked up). You see what I'm saying?