Android phones are not compatible with iSync and unfortunately Samsung have not bothered to provide any sync software for their Mac customers.
You'll need to use "The Missing Sync for Android" from MarkSpace software. Not all data can be synced via Bluetooth (it's generally far too slow for the amount of data modern smartphones need to sync) but MarkSpace should be able to advise.
check out FoneSync for Android. It syncs contacts, calendars, music and photos with your Mac and features an iTunes like interface. So it is easy to use and fast.
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