I am having some thoughts about the best use of an ML/NL converter to bring old equipment to life.

AUX-in: could I connect a turn table to it and then distribute it in a NL network?

PL: is there a converter that I can convert non-PL equipment to the PL output? For example, could I connect the old/ancient BS1 to it? And if so, could the turntable from AUX-in then play to the BS1 and could i distribute to other speakers in my home via NL?

ML: same question as for the PL.