This is a plugin for splitting tracks that contain different sounds.

(click image to enlarge)

The result is a track where the different sounds are split into different midi channels. This plugin is often used in situations where a track represents more than one instrument that is switched via patch changes.

These different midi channels can easily be split into different tracks (for example using the CAL-program "Split Channel to Tracks.cal" which is included with Cakewalk).