Bonus songs
Successfully complete the indicated task to unlock the corresponding song:

"Do It Well": Successfully complete this song in Ulala"s Challenge.
"Groove Is In The Heart": Successfully complete this song in Ulala"s Challenge.
"Low Rider": Successfully complete this song in Sonic"s Challenge.
"Macarena": Successfully complete Career mode on the Easy difficulty.
"Mexican Flyer": Successfully complete this song in Ulala"s Challenge.
"Soul Bossa Nova": Successfully complete this song in Linda"s Challenge.
"Un Aguardiente": Successfully complete this song in Sonic"s Challenge.
"The Cup Of Life": Successfully complete all challenges in Career mode on the Easy difficulty.
"The Wedding March": Get an "A" rank on two songs. Alternately, successfully complete Love Love mode.
Dance sound effects
Successfully complete the indicated song to unlock the corresponding sound effect:

Hi: "Smooth" in Bongo"s Challenge
Soiya: "Como Ves" in Bingo"s Challenge
Sonic: "Jump In The Line" in Amigo"s Challenge
Viva: "Take On Me" in Bongo"s Challenge
Wao: "El Mambo" in Bongo"s Challenge
Whistle: "Mambo Beat" in Bongo"s Challenge
Maraca sound effects
Successfully complete the indicated song to unlock the corresponding sound effect:

Animal: "Asereje" in Everybody"s Challenge
Carnival: "Baila Me" in Pose"s Challenge
Chu 2: "Tango With Me" in Everybody"s Challenge
DJ: "Borriquito" in Everybody"s Challenge
Energy: "La Bamba" in Pose"s Challenge
Ha: "Tequila" in Everybody"s Challenge
Ice Cream Man: "Magalenha" in Everybody"s Challenge
Love Machine: "Tubthumping" in Pose"s Challenge
Monk: "Vamos a Carnaval" in Everybody"s Challenge
Sexy: "Macarena" in Amigo"s Challenge
Soldier: "Papa Loves Mambo" in Everybody"s Challenge
Tough Guy: "Cha Cha" in Pose"s Challenge
Ulala: "Volare" in Bingo"s Challenge