There's desperation (like when a Latin pop star suddenly goes hip-hop with Scott Storch), and then there's desperación. Ricky Martin knows both on the misguided, lopsided "I Don't Care." With Amerie and Fat Joe providing vacant counterpoints, Ricky's maximal emotion clashes with Storch's sitarlike minimalism. It's less comeback single and more telenovela, Ricky's very own "Trapped in the Closet." In other words: nothing new.