Written by Jaron Lewis
Track out WAV files by definition are sounds in a beat that have been singled out and placed in individual files. This means that if you have different instruments and drums etc. you take each one from the track and place it alone in its own file to be used later. Once they are all separated, then you can use the individual tracks to manipulate the songs. For convenience they are all the same length so you don’t have to look for the right part at the right time, they are already lined up. But again, you can use them somewhere else as well (with permission of course unless they are your own).
Just for reference, know that this isn’t the only name that they use, they also use other names such as trackouts, track separation, individuals WAVS, etc. But every single one of these names is the same thing.