I wasn't aware that the MacBook resamples or I wouldn't use it.
Affordable would be the combo of another Hosa box and a used Marantz deck with the coax input, to me anyway.
The adapter you shared looks like what I need, so the next step is to find a BNC>RCA digital cable ( or a BNC>RCA adapter--I have a coax cable with RCA's ), and the Marantz deck. Does it matter which deck as long as it has the coax input?