I’d never really considered including my BV8 TV in the setup, but now that I see what options are available, I may rethink that, thanks.
As for the hum possibility, I was hoping that since the WIIM Pro gets its power from USB, and is therefore not running on mains voltage, I wouldn’t get the hum. I guess I’ll find out once I get it all connected! The Aux Splitter that Steve sells is only £20 so it’s worth a try.