[david2777]

There are programs to sync Android Devices (such as Double Twist), but I find it much easier to just mount the internal SD on my GalaxyS and drag and drop it. This being said, I hardly ever use my phone for music (since I also have a Zune) so it doesn't bother me much. As far as I know for my GalaxyS there is a partition on the internal storage for the "Internal SD" and the external SD is handled as a different card. Both mount separately and operate interdependently. So you would have to split that 40GB of music between both Internal and External SD cards.