Why dont you try what spanish people listens to? Or is this a playlist "only for tourist"?

I would suggest (not thinking only in my favourites but what i think it represents spanish contemporary music):

Rock-Folk

Los Planetas,
La Buena Vida,
El Columpio Asesino,
Cycle,
Deluxe,
Love Of Lesbian,
Mishima,
Facto de la Fé y Las Flores Azules,
La Habitación Roja,
Sidonie,
Chucho,
Klaus & Kinski,
Triángulo de Amor Bizarro,
Surfin' Bichos,
Sr. Chinarro,
Astrud,
Manel,
Los Flechazos,
Dorian

Folk-Flamenco

Estrella Morente,
Pata Negra,
Enrique Morente,
Carmen Linares,
Niña Pastori,
José Mercé,
Tomatito,
Vicente Amigo,
Miguel Poveda,
Radio Tarifa

Happy travels!
Miguel