Dubrovnik has good clubs, some on the beach:
Eastwest beach club – http://www.ew-dubrovnik.com at Banje beach at Ploce, Dubrovnik
Fuego – little club on Pile, Dubrovnik ex Arsenal
Labirint – http://www.labirint-dubrovnik.com – bar and nightclub
Lazareti at Ploce – quality DJs electronica
Orlandinjo Club, Hotel Dubrovnik Palace, http://www.dubrovnikpalace.hr. Live jazz acts go down nicely with excellent wines and cocktails.
Orlando Club, http://www.klub-orlando.com – live bands, DJ , film, alternative