Wow...........so much great music out there....what kind of Rhumba are you looking for? Contemporary? Romantic?
Here are some I like for Rhumba....
"Piramides de Amor" (Pyramids of Love) don' know the artist, but I think it is available on this site on an album called Brazil...or something like that. A very sensual rhumba.
"Give In to Me" by Michael Jackson....this is sexy and intense.
"Perhaps" by Doris Day........romantic and fun, classic.
Almost anything by Jose Feliciano for classic rhumba.
Smooth Operator by Sade.
These are just a few of my favorites
Hope you find something you love to Rhumba to!