Why not get something like a Paradigm Link, that supports 24/192, to plug into one of the analog aux inputs. On the cheap, you can pick up a Google Chromecast Audio for $35 that supports 24.96. Again, you have to plug it into an analog input.
The highest resolution that the Lifestyle 48 supports is 16/44.1, so if someone wrote a new codec, it would down-sample hi-res to 16/44.1 anyway.
The highest resolution that the Lifestyle 48 supports is 16/44.1, so if someone wrote a new codec, it would down-sample hi-res to 16/44.1 anyway.