$repeat($char(9734),$div($sub($regexp(%popularimeter%,'MusicBee|(\d{1,3})|\d+',$1),$mod($regexp(%popularimeter%,'MusicBee|(\d{1,3})|\d+',$1),64)),64))
But your answer:
doesn't match in my environment. I get one star more every 51 points, not every 64 points.
Maybe you can adjust this more obvious example for you?