This video was created several years ago (in Sonar 5) but this information still applied in Sonar 8.5.3, so if you are having an issue with a drum map or you just want to learn a little bit more about them, please watch this video.  I show how to create a drum map from the notes that are on a midi track, how to assign different notes within the kit to different hardware or software synths (VST), and a few practical applications where drum maps have helped me.  Buy Sonar X2 at Guitar Center Online