setRXOn [rx] // turn currently listening receiver on, or receiver rx
setRXOff [rx] // turn currently listening receiver off, or receiver rx
setRXPan pos // set azimuth for currently listening receiver to pos (0...1)
-setAuxMix [gain [trx]] // set mixing level for aux inputs
+setAuxMixGain [gain [trx]] // set mixing level for aux inputs
+setAuxMixSt [flag [trx]] // set aux input mix on/off