Not sending you’re files to the SM. Use a USB cable to connect a laptop/pc with the SM controller.
The ‘normal’ GCode Lightburn is enough. SM is Marlin or GRBL. DSP is for CO2 laser with Ruida or Trocen controllers. First take the trial version.
Good startpoint this. In stead of GRBL you can use Marlin Inline. With rotary you must use Snapmaker Marlin. GRBL and Marlin Inline don’t support ‘B’ Axis (at the moment).