Here is a list of the songs found on Mega Mix 21 with YouTube videos for those I could easily find:
La Alianza (Latin Dance)
A Gozar Todo el Mundo (Merengue/Hip Hop) – La Bocana
http://www.youtube.com/watch?v=lazi6smdphQ
Bomba Camara (Salsa) – Richie Ray & Bobby Cruz
http://www.youtube.com/watch?v=avnlJ3fJed8
Danca do Cnguru (Axe)
Abusadora (Reggaeton) – Wisin & Yandel
Cumbia Lunera (Cumbia) – E l Gran Silencio
http://www.youtube.com/watch?v=un4LmfWeVUI
Bailando Con Lola (Rumba Flamenca)
Te Gusto (Merengue) – Amarfis
Guasamatakonyuka (Latin Hip Hop) – Prophex ft. Indio
Bailar Pegados (Pop Ballad/Cool Down) – Sergio Dalama