When “Line in” input in VEO-XTI2L transmitter is selected using the “Audio” button, the audio signal coming from the external sound source plugged will be embedded on the HDMI video stream overwriting the existing audio flow. If “Line out” or “SPDIF out” is selected using the “Audio” button on the VEO-XRI2L receiver, audio extraction will be available in either of this two audio outputs. The audio will remain embedded on the HDMI video stream as well.