<p>It's not Offically Supported but you can use MySQL for the database, I've had reasonable success with it, but the problem is, there is no fall back if it can't connect to the database. I think I have a Feature request for the ability to fall back to the local SQLlite database if the remote isn't accessible, I think I included a "Sync Databases" option in the request. As an alternative, for now, I'm using Cubby to share the OpenLP database with multiple systems, and it works well. Used to use Dropbox, but found Cubby to use less resources when idle than Dropbox, plus more space for free (Start with 5 Gigs and earn up to 20 gigs 1 gig at a time). </p>