Problem with Cakewalk Sound Center "groove," "bounce," or whatever you want to call it.

I'm using Sonar Platinum and am trying to use Cakewalk Sound Center with the "Saloon Balloon" piano.  The sound is find, but it plays my piano part back with a bounce-type rhythm, and I just want the part played straight.  I see where I can associate a UI control with a CC controller, but I have no idea what CC controller is responsible for this.  Has anyone else done anything with Cakewalk Sound Center?