Syncing between multiple homes is something we’ve discussed forever, and is a feature we’d like to do in a truly first class way at some point – it’s on our roadmap, but I don’t have any firm timelines for when that might happen.
For now, backing up and restoring databases between two locations should work, and that is something we’re hoping to make a little easier soon 
https://community.roonlabs.com/t/b161-new-dropbox-support-option/14690/4?u=mike