Brady, as was said, there's no digital output available of SACD material, in order to prevent the making of perfect digital copies(which terrifies the industry). So, no, you haven't missed any setting so far as trying to get a digital output.
As far as bass management of two-channel SACD material, the manual for your player appears not to be available online but it may have the answer buried somewhere within it. If the player doesn't have a provision for sending the bass from the two-channel SACD tracks to the sub(some do),then Peter's suggestion may work. If your player has a stereo output(other than the six analog outputs for SACD)which also outputs the front two channels from the SACD then you can connect that to the regular CD inputs or other unused inputs of the receiver. Study the manual somemore and if it makes no sense just try the separate connection to see if it works.
