I'm looking to upgrade the standard connections on my SKY+ digibox and Toshiba SD110E dvd player, but am unsure and concerned as to using both connections on the EXT 4 terminal on my TOSHIBA 42WH18B RPTV. I'm upgrading the scart connector from my SKY+ digibox to a QED RGB scart using EXT1 on the TV; the SKY+ digiboxs' optical digital link into the TVs Optical Audio Terminal (EXT4) for sound. If I also upgrade from scart to component video lead on my dvd player and thereby use the co axial audio terminal for sound into the co-axial audio terminal on the TV will I encounter any problems with both digital audio terminals being used. Moreover, is this an acceptable alternative to just using the scarts? Any help would be appreciated. Thanks. Dan.