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

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.