Yo quiero (tu te enamores)
 

It's a title of a Pitbull-song. I'd like to know what it means and why "tu te" is used. I have seen either tu or te but not all both in one sentence.

The title is properly written "Yo quiero (tú te enamores)". Note the written accent on "tú", which is a subject pronoun. The word "tu" (no written accent) is a possessive adjective that means "your" (familiar).

The full sentence would be "(Yo) quiero que (tú) te enamores": both of the subject pronouns are optional, but it's possible to explicitly use either or both, especially for contrast or emphasis.

Sorry about the accent. my mp3 player doesn't display that properly. Thanks for explaining. Was quite irritating because most of what I've seen so far was without emphasis. Or too rare to be remembered.