Hello Karl,

With regard to the static, have you downloaded the latest drivers for the Lexicon? What OS X version are you on?

With regard to the routing, first you need to setup multiple inputs in Devices, VST Connections, Inputs. Have 2 stereo busses here. Then on the audio channels you can set the first audio channel to Stereo In, and the 2nd to Stereo In 2. Thank you.