If you have the following things....
  • A Honeycomb Tablet
  • Android 3.2
  • An SD Card
  • A Mac
  • iSyncr
 You can now sync to either the internal storage or SD card.  Just head over to http://www.jrtstudio.com/iSyncr-iTunes-for-Android and download the latest Mac version.  Once installed, run a sync like you normally would, but now you should see the following dialog which will allow you to select which memory location to sync to.