I'm in the process of opening a spa. I need a sound system to play non stop music. I want to get away from using CD's. I'm currently using a 40G click wheel and a 1G shuffle. I really love the shuffle. I don't need a big library of music. Only 8 hours or so. So a 512 shuffle would be adequate. I could change the playlists around using hardware I already have, Like my PB or Ibook. Question: Would it be practical to set up shuffle with it's own usb power supply and wired straight into a sound system for continuous operation 12 hours a day, day in day out? Would an Ipod mini be better? I notice the apple store isn't carrying them anymore. How would an Ipod hold up to such extended use? I like the price of the small shuffle and that has the needed capacity.