Hey Im new to the recording scene, and am hoping to get a setup soon. Ill focus mostly on electric and acoustic, with a little vocals thrown in. Im thinking about getting a SM57 and a Behringer 6-channel mixer. Ill use either Cubase or Audacity or some comparable program. My questions are: 1. If I buy the mixer, do i need to also buy a USB interface to connect it to my computer? 2. Do I even need a mixer or can I just use the recording program? Thanks for helping out.