Flo Rida will perform in Jersey City, July 4. Continuing its tradition of offering free concerts by major music stars on July 4 — Snoop Dogg, Pitbull and Kool & the Gang have all been booked in recent years — Jersey City will present Flo Rida this year, with opening DJ sets by Shaquille O’Neal (performing as DJ Diesel) and Funk Flex, in Exchange Place. Past events have attracted up to 150,000, according to the city’s web site. Following the music, fireworks will launch from two barges in the Hudson River. For information, visit freedomandfireworks.com. Flo Rida had a remarkable string of 11 To…