Are you kidding me?
ARE YOU KIDDING ME, Cakewalk?!
I have bought just about every upgrade from Pro Audio 9 on and I've even bought the mp3 encoder for previous versions and X1 just told me I need to upgrade my mp3 encoder to export an mp3.
First of all, the ABSOLUTE ABSURDITY that you cannot export in mp3 format "natively" from an audio app, especially one supposedly of the caliber of Sonar is ... beyond ridiculous!
This floors me everytime I have to go through this.