OK. So just "go thru the settings menu on the HT system and program it for a 2.1 setup and then connect it to the 2.1 system and use it like a regular CD/SACD player on a daily basis" like I stated previously. I would also recommend keeping 1 HDMI connection on your HT system available for firmware updates, either via a LAN connection or go to Oppo's web site and download it to a flash drive (FAT32 format), to view the status on your TV during the update. I have no idea how good the" Teac DSD reference cd player" is, as compared to the Oppo BDP-105, but if you've got money to burn, knock yourself out.
I have the 105 model myself and all the research I did, previously to purchasing the unit, led me to believe it's just as good, if not better, than some stand-alone CD/SACD players costing twice as much.