I got married in Oahu in the summer of 2009 (outdoor wedding & reception), and used JPP's services to use my ipod instead of hiring a DJ. You can't really beat the price for what you get; and we opted to pay extra to have someone man the ipod for an hour or so (to cue the music for our wedding ceremony, processional/recessional, and to set up for the reception).  They come to your site, set up the equipment, and take it away. Would recommend them if you are on a major budget and are picky about what music gets played.