Is there anyway to use digital optical audio cable with Tivo 2 (as a stand alone) with a regular direcTV receiver? I currently have the digitial optical line from my directv receiver to my av receiver. There are only RCA jacks on the TIVO 2 unit. If I leave the RCA cables from the Direcv receiver to the Tivo 2 unplugged, I only get live audio. Also, with this same configuration, sound arrives before the picture (i.e., can hear it before they say it).